SUMMER BIOMECH-combined
(35.05. 91.88) None of the included answers are correct Cannot be determined from the info give (25.86. 53.61) (32.95. 33.12)
(32.95. 33.12)
If the reported absolute angle of the shank is 52.7 degrees and the reported absolute angle of the foot is 29.3 degree, what is the ankle biomechanical angle? Cannot compute with the given information -113.4 degrees 23.4 degrees -23.4 degrees 113.4 degrees
-113.4 degrees
What is the Velocitv at 4 5 s? -2 m/s -7 m/s - 4.5 m/s None of the included answers is correct -1 m/s
-4.5 m/s
If a runner's center of mass velocity was 3.7 m/ at an angle of 43 degrees how high did their center of mass go after takeoff? 0.35 m None of the included answers is correct 0.7 m 0.32 m 1.39 m
.32
If a runner's center of mass velocity was 3.7 m/s at an angle of 43 degrees how high did their center of mass go after takeoff? 0.32 m 1.39 m None of the included answers is correct 0.7 m 0.35 m
.32m
If a runner's center of mass velocity was 3.7 m/s at an angle of 43 degrees how high did their center of mass go after takeoff? None of the included answers is correct 0.35 m 0.32 m 0.7 m 1.39 m
.32m
A person's time up was 0.26 s. Assuming that their takeoff height and landing height are the same how high did they jump 0.33 m None of the above 0.08 m 1.33 m 0.13 m
.33m
Given the following velocity profile, what is the change in position from measurement 2 - 3? (Integrate from i= 2 to i = 3) -600 m 0.09 m None of the included answers are correct 0.03 m -800 m
0.09 m
The video sampling rate is 60 pictures/s. If the jumper was in the air for 17 pictures how long was he going up?:
0.14 s
The video sampling rate is 60 pictures/s. if the jumper was in the air for 17 pictures how long was he going up?
0.28 s (17/60 = .28)
The video sampling rate is 60 pictures/s. If the jumper was in the air for 17 pictures how long was he in the air? 0.28 s 0.14 s 3.5 s 0.7 s
0.7 s
If a runner's center of mass velocity was 3.7 m/s at an angle of 43 degrees what was their step length? 1.39 m 0.32 m None of the included answers is correct 0.35 m 0.7 m
1.39
If the angular velocity of the lower extremity is 400 deg/s and the radius from the hip to the foot is 1.75 m what is the tangential velocity of the foot at contact with the ball? 0m/s None of the included answers is correct. 777.8 m/s 12.22 m/s 700 m/s
12.22 m/s
What is the Thigh angle? 55.6 degrees 124.4 degrees 96 degrees 43.5 degrees None of the included answers is correct
124.4 degrees
A ice skater does a triple axel jump and completes three and a half revolutions. How many degrees did the skater travel? 2m radians None of the included answers is correct 1260 degrees 1080 degrees 21.99 r radians
1260 degrees
The known length in the video image is 5 m and measure on the video screen it is 10 cm. A runner's step was measured as 4 cm long. How long was the actual step? 0.5 m 12 m 2.5 m 1 m Cannot be determined from the information provided
2 m
A person running was found cover 10 m in 4 s by taking 9 steps. What was their step rate?
2.25 step rate = # of steps per second 9/4 = 2.25
What would be a plausible, high hypothesis for how fast an athlete can run 7 mph 11 mph None of the included answers is correct 25 mph 40 mph
25 mph
None of the included answers are correct 24.2 kg 73.48 16 49.5 lb 3.3 kg
3.3kg
What is the time of the velocity between I = 7 to 8? 4 3.5 None of the included answers is correct 3.25 3.75 s
3.75s
Normal consumer video cameras in the United States record at a sampling rate of.:
60 Hz
Normal consumer video cameras in the United States record at what sampling rate? 500 Hz 250 Hz 120 Hz None of the included answers are correct 60 Hz
60 Hz
How many degrees is n/3 radians? 60 degrees 10.5 degrees 0.16 degrees None of the included answers is correct 1.05 degrees
60 degrees
Normal consumer video cameras in the united states record at what sampling rate?
60 pictures/s (Hz)
In walking stance (support) phase is approximately ________ of the gait cycle?
60%
Limb advancement during initial swing is approximately what percentage of the gait cycle?:
60-73%
Stance phase is what percent of the gait cycle?:
62%
What provides the amount of movement from an anatomical position? A. Relative angle B. Absolute angle C. Both A and B D. Neither A and B
A
What is the definition of linear kinematics?:
A description of motion in which all points on the object of interest move in the same distance in the same time
What is the definition of Linear Kinematics? -A description of motion in which all points on the object of interest move the same distance in the same time -A description of motion in which all points on the object of interest move through the same distance in the same time along a curved path -A description of motion in which all points on the object of interest move through the same distance in the same time along a straight path None of the included answers are correct -A description of motion in which all points on the object of interest move through the same angle in the same time
A description of motion in which all points on the object of interest move the same distance in the same time
Gait can be described as:
A series of controlled falls
A(n) ____angle represents the angle of inclination of a body segment. Relative © = cos-1 [(a2 - b2 - c2) / (-2bc)] Absolute None of the included answers is correct Joint
Absolute
Which is NOT considered to be a pillar of the Department of Health Sciences and Kinesiology at Georgia Southern University? * All included answers are considered pillars • Pedagogy • Exercise Physiology • Biomechanics • Athletic Training
All included answers are considered pillars***
Where do BSPs come from? Immersion studies Cadaver studies Geometrical models Radioisotope scanning studies All of the included answers are correct
All of the included answers are correct
What setting is likely to help increase the depth of field Picture rate of 1/30th /s Aperture setting/F Stop of 22 None of the included answers is correct Shutter speed of 1/500 s Focal length of.400 mm
Aperture setting/F Stop of 22
Which, of these applications do not fall within the area of Kinematic analysis? Analyzing knee range of motion Analyzing golf club head speed All included answers fall within kinematics Assessing reaction forces in the ankle joint Assessing poor postures
Assessing reaction forces in the ankle joint
For the long jump, which letter represents the projection height? A B C D E
B
What type of angular motion is human movement doing a somersault or twist? A. About an external axis B. About the center of mass C. About an axis through a joint D. None of the above
B
A better video image is the result of Big f stop, High shutter speed None of the included answers is correct Small f stop, Low shutter speed Small f stop, High shutter speed Big f stop, Low shutter speed
Big f stop, High shutter speed
What kind of angle measurement at the knee does the grap None of the included answers is correct Segmental Biomechanical Law of Cosines Intersegmental
Biomechanical
A person at rest is studied kinematically. However, a static person is only studied kinetically:
Both statements are false
Advancing from an odd video field to an off video field takes 1/60th s. Advancing from a video picture to the next video picture takes 1/30th s.
Both statements are false
In the between method the position-time values do not align. In the @ method they do alight however accuracy is lost.
Both statements are true
The sampling rate determines when a picture is captured. The shutter speed determines the amount of time an image is transmitted to the CCD during each capture period.
Both statements are true
Given the stick figure, which angle for the thigh is the reported segment angle? A B C D None
C
For a camera light is recorded through a lens onto a(n)
CCD
For a camera light is recored through a lens onto a(n):
CCD
In a proper camera setup just prior to video capture, which is NOT correct.
Camera is parallel to motion
The law of cosines angle at the hip is 175 degrees. Therefore, Cannot be determined The hip is flexed None of the included answers is correct The hip is neutral, aligned, anatomical The hip is extended
Cannot be determined
A focal length of 35 mm to 80 mm specifies a camera lens that?
Capable of zooming in to magnify image size
Tangential velocity is parallel to the radius. If the object no longer travels in an arc the object will fly tangent to the arc at the instant of release. A. Statement 1 is true, Statement 2 is true B. Statement 1 is true, statement 2 is false C. Statement 2 is false, statement 2 is false D. Statement 2 is false, statement 2 is true
D
What are two things that must be known when dealing with an angular kinematics problem? A. Length of the radius B. Mass of the object C. Axis of rotation location D. A and C E. None of the above
D
In gait, knee flexion and extension during the swing phase is largely due to actions at the hip. To examine this one would conduct a:
Dependent kinematic
In gait, shank movement during the swing phase is largely due to actions at the hip. To examine this one would conduct a Dependent kinetic analysis Dependent kinematic analysis None of the included answers are correct Relative kinematic analysis General kinetic analysis General kinematic analysis
Dependent kinematic analysis
From a video technology perspective what does progressive mean? Drawing every line of a picture consecutively None of the included answers is correct Drawing the odd lines and then the even lines More pixels across the screen More pixels down the screen
Drawing every line of a picture consecutively
Which type of biomechanics focuses on reducing the risk of injury in the workplace? Occupational Sport Ergonomics Clinical None of the included answers is correct
Ergonomics
A person at rest is only studied kinematically. However, a static person is only studied kinetically. First Statement is False. Second Statement is True First Statement is True. Second Statement is True First Statement is False. Second Statement is False First Statement is True. Second Statement is False
First Statement is False. Second Statement is False
An example of a scaler variable that requires the specification of magnitude and direction is speed. The vector equivalent variable would be velocity:
First statement is false, second statement is true
A stride goes from RHS to LHS. The presence of non support defines a fast walk or run First statement is false. Second statement is true First statement is true. Second statement is true First statement is true. Second statement is false First statement is false. Second statement is false
First statement is false. Second statement is false
An example of a scaler variable that requires the specification of magnitude and direction is speed. The vector equivalent variable would be velocity. First statement is true. Second statement is true First statement is true. Second statement is false First statement is false. Second statement is false First statement is false. Second statement is true
First statement is false. Second statement is true
An example of a scalar variable that requires the specification of magnitude and direction is speed. The vector equivalent variable would be velocity.
First statement is false. Second statement is true.
Which of these does NOT apply to a qualitative analyses? Based on observation Non numerical Does not require technology Focuses on time and space (kinetics) All included answers apply to qualitative analyses
Focuses on time and space (kinetics)
What factors) directly determine how far (range) an object flies Vertical velocity Horizontal velocity Time in the air Height TBCM rises after takeoff
Horizontal velocity & Time in the air
The vertical speed at the instant of release directly determines I.Height CM rises after takeoff I.Time it takes to reach maximum height III. How far a projectile travels l,II None of the included answers is correct I,II,III I II
I,II
In walking define the period of Right Single Support 1. RFS II. RTO III. LFS IV. LTO IV to III l to Il lI to l Il to IV None of the included answers is correct.
IV to III
Why is the background in this picture blurry? Shutter Speed too high Set on Auto Focus None of the included answers is correct Shutter Speed too low Inadequate Depth of Field
Inadequate Depth of Field
What happens to the period of non-support as a person runs faster? It doesn't change It gets longer Increases the period of double support None of the included answers is correct It gets shorter
It gets longer
From an athletic performance perspective, a coach is most likely interested in quantifying Takeoff Height Landing Height Flight Height Jump and Reach Height None of the above
Jump and reach height
Which of the following does not apply to a Qualitative analysis? Temporal Kinetic Spatial All apply to a Qualitative analysis Kinematic
Kinetic
According to the graph, from mid-support (msu) to contralateral heel-strike (chs) ? Knee is flexing and hip is extending None of the included answers is correct Knee is extending and hip is moving behind vertical Knee is flexing and hip is moving behind vertical Knee is extending and hip is extending
Knee is flexing and hip is extending
In walking, define the period of right single support
LTO to LFS
Spatial analysis deals with: Two dimensions only All included answers are correct Velocity Acceleration Location of points of interest in spaceport
Location of points of interest **
Spatial analysis deal with::
Location of points of interest in space
What is the measure of the amount of light in a given environment
Lux
What measures the amount of light in a given environment?:
Lux
What is (are) NOT advantages of the @ method?:
More sensitive and provides calculations at the beginning and end of the activity
Which circumstance would enhance mobility? Lower TBCM None of the answers provided would enhance mobility Increase BOS area Move TBC toward back edge of BOS Place feet toward oncoming force
Move TBC toward back edge of BOS
A person drove 5 km North and 4 km East what was their displacement? 6.4 km 3 km None of the included answers is correct 9 km 1 km
None of the included answers is correct
What is the Velocity between t = 5 s to 5.5 s 1 m/s -2 m/s None of the included answers is correct -0.5 m/s -1 m/s
None of the included answers is correct
In running define the period of Double Support 1. RES II. RTO III LFS IV LTO ll to I ll to IV None of the included answers is correct. l to II IV to Ill
None of the included answers is correct.
In running, define the period of double support
None, running never has double support
To increase speed of movement the body must be pushed to higher and higher speeds is a statement of what Principle of Training Individuality Specificity None of the included answers is correct Periodization Overlaod
Overload
To increase speed of movement the body must be pushed to higher and higher speeds is a statement of what Principle of Training None of the included answers is correct Specificity Periodization (Individuality Overload
Overload
Based on the standard Cartesian coordinate system, a single point that is found at (-3,3) must be located in which quadrant?:
Quadrant II
Mass
Qualification of the tendency of a body to resist a change in its state of linear motion
Inertia
Quantification of the tendency of a body to resist a change in its state of motion
moment of inertia
Quantification of the tendency of a body to resist a change in its state of angular motion
Kinematics...:
Quantifies momentum
A person on a skateboard is gliding down a long ramp. She is experiencing what type of motion?:
Rectilinear
A person standing on a skateboard is gliding down a long ramp. She is experiencing what type of motion? -Rectilinear -Curvilinear -None of the included answers are correct -Angular -General
Rectilinear
A person running was found to have a step length of 2 m/step and a step rate of 1.42 steps/s over 10 m. What was their velocity?
SL * SR = velocity --> 2.84 m/s
A person running was found to cover 10 m in 4 s by taking 9 steps. What was their step length?
SL = distance/# of steps --> 1.11
Why is the runner in this picture blurry? None of the included answers are correct Shutter Speed too high Inadequate Depth of Field Shutter Speed too low Set on Auto Focus
Shutter speed too low
A 50 m competitive swimmer who does well in the 1st and 2nd swimming heats is upset that she doesn't do well in the 3rd race heat of the day so she decides to swim 1000 m intervals during practice to build up her endurance. What principle of training does her decision violate?:
Specificity
A 50 m competitive swimmer who does well in the 1st and 2nd swimming heats is upset that she doesn't do well in the 3rd race heat of the day. She decides to swim 1000 m intervals during practice to build her endurance. What principle of training does her decision violate?
Specificity
A 50 m competitive swimmer who does well in the 1st and 2nd swimming heats is upset. that she doesn't do well in the 3rd race heat of the day so she decides to swim 1000 m intervals during practice to build up her endurance. What principle of training does her decision violate? Specificity Individualization None of the included answers is correct. Overtraining Periodization
Specificity
Advancing from an odd video field to an odd video field takes 1/60th of a second Advancing from a video picture to the next video picture takes 1/30th of a second Statement 1 is True Stat ement 2 is true Statement 1 is False. Statement 2 is True Statement 1 is True. Statement 2 is False Statement 1 is False. Statement 2 is False
Statement 1 is False. Statement 2 is False
General Kinematics describes how a point moves in relation to the body. Relative kinematics describes how a point moves depending on remote parts of the body Statement 1 is False. Statement 2 is False Statement 1 is True. Statement 2 is False Statement 1 is True. Statement 2 is True Statement 1 is False. Statement 2 is True
Statement 1 is False. Statement 2 is False
The center of mass of the body is located in the geometric center of the body. It is where the entire person's weight may be considered concentrated. Statement 1 is True. Statement 2 is True Statement 1 is True. Statement 2 is False Statement 1 is False. Statement 2 is True Statement 1 is False. Statement 2 is False
Statement 1 is False. Statement 2 is False
Lux is a messure of the amount of light in a given environment. The lower the Lux Rating the better able to record low light. Statement 1 is False. Statement 2 is False Statement 1 is True. Statement 2 is False Statement 1 is True. Statement 2 is True Statement 1 is False. Statement 2 is True
Statement 1 is True. Statement 2 is True
At a slow pace in running a person will tend to increase speed by increasing both step length and step rate with an emphasis on step length. At a faster running pace speed is increased with a focus on step rate Statement 1 is False. Statement 2 is False. Statement 1 is True. Statement 2 is True. Statement 1 is True. Statement 2 is False. Statement 1 is False. Statement 2 is True.
Statement 1 is True. Statement 2 is True.
A looming object as it approaches appears to get bigger and move faster the closer that it is. An innate trigger 0.07s prior to ground contact causes a lander to "retract their landing gear" to lessen impact forces during landing. Statement 2 is False Statement 2 is True Statement 1 is False Statement 1 is True
Statement 2 is false Statement 1 is true
After 7 m/s, which of the following is considered the main method of increasing speed?:
Stride rate
The length of time the CCD receives information for a picture is controlled by the shutter. The minimum practical shutter speed is 1/250th.
The first statement is true. The second statement is false.
The Biomechanical angle at the hip is O degrees. Therefore, None of the included answers is correct The hip is flexed The hip is extended The hip is neutral, aligned, anatomical Cannot be determined
The hip is neutral, aligned, anatomical
If a softball was thrown into the air with a projection angle of 0 degrees, what can be assumed about the characteristics of the projectile? None of the included answers is correct The object will travel the same distance in the horizontal and vertical direction The object will only go up and down The object will not go up The object will travel in a symmetrical parabola
The object will not go up
Angular Kinetics
The study of the cause of motion in which all points on the object of interest move through the same angle in the same time
Linear Kinetics
The study of the cause of motion in which all points on the object of interest move through the same displacement in the same time
Angular Kinematics
The study of the effect of forces in which all points on the object of interest move through the same angle in the same time
Linear Kinematics
The study of the effect of forces in which all points on the object of interest move through the same displacement in the same time
Segment Location Segment Masses Spatial Data
To calculate Center of Mass what data is required
Biomechanics is? -None of the included answers are correct -Use of the tools of mechanics and physics to study human movement -Study of human movement from a physical sciences perspective -Application of chemistry to the study of human movement -Study of human movement from a science and art perspective
Use of the tools of mechanics and physics to study human movement
Which of the following does NOT apply to statics? All apply to statics acceleration = 0 can be kinematic velocity must = 0 can be kinetic
Velocity must = 0
Point at which all the mass may be considered to be concentrated Point about which the body's weight is equally distributed in 2 directions Point at which the mass on each side of the body is the same
Which of the following apply to the Center of Mass
A person jumps 33 cm into the air. Assuming that their takeoff height and landing height are the same how long were they in flight? a. 0.13s b. 0.26s c. 0.54s d. 0.49s e. cannot be determined from the information given
a
A person sitting on a skateboard is gliding down a long ramp. She is experiencing what type of motion? a. Rectilinear b. Curvilinear c. General d. Angular e. None of the above
a
A vector is a parameter that is described by ______ and ________. a. Magnitude and direction b. Speed and direction c. Angle and direction d. Speed and angle e. None of the above
a
An analysis of a runner reveals the following: Displacement was 5 m. The number of steps was 5 and the time needed to cover the 5 m was 1.8 s. What was their step rate? a. 2.78 steps/s b. 1.67 steps/s c. 0.7 steps/s d. 3.33 steps/s e. None of the above
a
An analysis of a runner reveals the following: Displacement was 5 m. The number of strides was 3 and the time needed to cover the 5 m was 1.8 s. What was their step length? a. 0.83 m/step b. 1.67 m/step c. 1.43 m/step d. 1.87 m/step e. None of the above
a
An example of angular motion about an external axis would be a. A child on a seesaw b. Knee extension during a soccer kick c. A gymnast doing a double back somersault d. Shoulder flexion during a bench press e. All of the above
a
An ice skater does a triple jump and completes three and a half revolutions. How many degrees did the skater travel? a. 1260 degrees b. 1080 degrees c. 2π Radians d. 21.99π Radians e. Both a and d
a
An object will continue to move in the same direction and with the same velocity until a force causes a change in motion is which law of motion? a. Law of inertia b. Law of acceleration c. Law of force d. Law of action-reaction
a
At a slow pace in running a person will tend to increase their speed by increasing their step length. Overall step rate is the key to better performance. a. Both statements are true b. Statement 1 is true, Statement 2 is false c. Statement 1 is false, Statement 2 is true d. Both statements are false
a
During running, a runners ground reaction force can be broken into negative impulse and positive impulse. a. True b. False
a
Event Time RFS1 0 RTO1 0.2 LFS1 0.283 LTO1 0.5 RFS2 0.567 RTO2 0.784 LFS2 0.867 RTO2 1.084 RFS3 1.151 What kind of patter does the gait data present? a. Running b. Walking c. Cannot be determined based on the information presented d. None of the above
a
Gait can be described as: a. A series of controlled falls b. Application of braking forces only c. Continual shifts of ones center of mass d. A single stride
a
Ground reaction forces can be easily broken down into what three components? a. Fx, Fy, Fz b. Vertical, Anteroposterior, Mediolateral c. Mx, My, Mz d. Negative impulse, positive impulse, and vertical impulse e. Both A and B
a
If the slope of angular velocity versus time plot is zero, then which of the following statements must always be true? a. Angular acceleration is zero b. Angular acceleration is positive c. Angular acceleration is negative d. Angular acceleration is moving counterclockwise e. Not enough information provided
a
In running the Biomechanical angle at the knee oscillates between a. 0 - 80 degrees b. 0 - 50 degrees c. -20 to 20 degrees d. -35 to 35 degrees e. None of the above
a
Locating the Total Body Center of Mass requires the use of a. Anthropometric data b. Dynamic data c. Static data d. Quasi-static data e. None of the above
a
Measuring ankle angle change as a person sits into a chair is a relative measure of motion. When separately measuring shank and foot angle we learn which segment was responsible for the change in ankle angle. a. Statement 1 is true, Statement 2 is true b. Statement 1 is true, Statement 2 is false c. Statement 1 is false, Statement 2 is true d. Statement 1 is false, Statement 2 is false
a
Normal consumer video cameras in the united states record at what sampling rate? a. 60 Hz b. 250 Hz c. 500 Hz d. 1000 Hz e. None of the above
a
Stance phase is approximately ______ of the gait cycle? a. 62% b. 60% c. 38% d. 40% e. None of the above
a
The advantage of the "between" method of velocity calculation is that it is more sensitive than the @ method. An issue with the "between" method of calculating velocity is that the position and velocity values do not align once derived. a. Statement 1 is true, Statement 2 is true b. Statement 1 is true, Statement 2 is false c. Statement 1 is false, Statement 2 is true d. Statement 1 is false, Statement 2 is false
a
The dynamic coefficient of friction during walking and running can be calculated by: a. Force in the anteroposterior direction/force in the vertical direction b. Force in the anteroposterior direction/force in the mediolateral direction c. Force in the anteroposterior direction + force in the vertical direction d. Force in the anteroposterior direction/force in the vertical direction + force in the mediolateral direction e. None of the above
a
To prevent distortion the video camera should be leveled and be placed perpendicular to the plane of motion. Then an appropriate, practical shutter rate of at least 1/500th of a second must be set to limit how long an image is captured on the CCD. a. Both statements are true b. Statement 1 is true, statement 2 is false c. Statement 1 is false, statement 2 is true d. Both statements are false
a
Video analysis is used to analyze a basketball player's jumping prior to beginning her training macrocycle. If her total time in the air was 0.4 s what was her jump height? a. 0.1962 m b. 0.49 m c. 0.981 m d. 1.962 m e. None of the above
a
What are the base units for a newton (i.e. what units make up a newton)? a. kg-m/s2 b. kg-m/s c. m/s/s d. Ns
a
What is the definition of linear kinematics? a. A description of motion in which all points on the object of interest move the same direction in the same time b. A description of motion in which all points on the object of interest move through the same angle in the same time c. A description of motion in which all points on the object of interest move through the same distance in the same time along a curved path d. A description of motion in which all points on the object of interest move through the same distance in the same time along a straight path e. All of the above
a
When a person lowers their arms from above head to directly in front what happens to the TBCM relative to the hip? a. It moves closer to the hip and anteriorly b. It moves further from the hip and anteriorly c. It moves closer to the hip and posteriorly d. It moves further from the hip and posteriorly e. None of the above
a
When weekly and monthly cycles lead to prolonged fatigue what Principle of Training is applicable? a. Overtraining b. Overload c. Reversibility d. Periodization e. None of the above
a
Which of the following are all considered phases of the gait cycle? a. mid-stance, pre-swing, terminal swing b. initial contact, single limb support, terminal swing c. mid-stance, single limb support, terminal swing d. weight acceptance, single limb support, limb advancement
a
Which of the following are phases of limb advancement during gait? a. Initial swing and terminal swing b. Initial swing and terminal stance c. Initial contact and terminal stance d. Initial contact and mid-stance e. None of the above
a
Which of the following are true of static analyses? I. It may be used to identify stresses on the body while stationary in a chair II. It is useful for analyzing a person while they are standing up out of a chair III. Velocity = 0 IV. Benefits from a kinetic analysis a. I and IV b. I c. III, IV d. I, III, IV e. None of the above
a
Which of the following is true a. Angular kinematics examines what happened during angular motion b. The axis of rotation is parallel to the plane of motion c. If an object has constant angular speed, the linear acceleration is 0 d. Angular motion requires that an object of interest has the same linear displacement e. They are all (a - d) false
a
Which of the following statements is false regarding absolute angles? a. Describes the amount of flexion or extension at the joint b. Calculated using the trig relationship of tangent c. Describes the orientation of a segment in space d. Measured counterclockwise from the right horizontal
a
X. Y Metatarsal 2.13 0.6 Ankle 2.03 0.75 Knee 2.16 1.36 Hip 1.77 1.93 C7 1.9 2.74 Given the above(thigh segment angle) what is the Hip Law of Cosines Angle a. 136.5 deg b. 80.9 deg c. 124.4 deg d. 43.5 deg e. None of the above
a
You are working with a volleyball player who is jumping into the net on her spikes. If you found that the resultant velocity at takeoff was 3.13 m/s at an angle of 63.4 deg, what was her initial horizontal velocity at takeoff? a. 1.401 m/s b. 0.14 m/s c. 2.8 m/s d. 3.13 m/w e. None of the above
a
You feel that the key to helping a figure skater prepare for takeoff in an axel jump is a 20 m/s velocity. To be successful they would have to choose what combination of SL and SR? I. A SL and SR combination that lies on the line II. A SL and SR combination that lies above the line III. A SL and SR combination that lies below the line a. I b. II c. III d. I, II e. I, III
a
if a baseball was thrown into the air with a projection angle of 0 degrees, what can be assumed about the characteristics of the projectile? a. The object will not go up b. The object will only go up and down c. The object will travel in a perfect parabola d. The object will travel the same distance in the horizontal and vertical direction
a
A person at rest is studied kinematically. However, a static person is only studied kinetically. a. First statement is false. Second is false b. First statement is true. Second is false c. First statement is false. Second is true d. First statement is true. Second is true
a (Person at rest is studied kinetically; person statically (at rest or constant movement) could be studied kinematically or kinetically)
An example of a scalar variable that requires the specification of magnitude and direction is speed. The vector equivalent variable would be velocity. a. First statement is false. Second is true. a. First statement is false. Second is false. a. First statement is true. Second is false. a. First statement is true. Second is true.
a (Speed is a scalar quantity. Velocity is a vector)
What is (are) NOT advantages of the @ method? a. More sensitive b. Allows time values to align c. Provides calculation at the beginning and end of the activity d. All of the above (a to c) are NOT advantage(s) e. None of the above (a to c) are advantages(s)
a and c
What is the definition of linear kinematics?
a description of motion in which all points on the object of interest move in the same distance in the same time
Which of these applications does not fall within the area of kinematic analysis?
assessing reaction forces in the ankle joint
A football player with a mass of 100 kg runs at 5/s, what would his momentum be? a. 300 kg-m/s b. 500 kg-m/s c. 25 kg-m/s d. -25 kg-m/s e. Not enough information provided
b
A looming object as it approaches appears to get bigger and move faster the closer that it is. A trigger of 0.27 seconds prior to ground contact causes a lander to "retract their landing gear" to lessen impact forces during landing. a. Statement A is true and statement B is True b. Statement A is true and statement B is false c. Statement A is False and Statement B is true d. Statement A is false and statement B is false
b
After 7 m/s, which of the following is considered the main method of increasing speed? a. Stride length b. Stride rate c. Stride length and stride rate d. None of the above
b
Angular kinematics describes angular motion with regard to the causes of the movement. a. True b. False
b
As a golfer examines a shot it is noticed that the putting green is below the current lie of the ball. Assuming air resistance is negligible the optimum angle at which the ball flies off is a. Greater than 45 degrees b. Less than 45 degrees c. Both B and C d. None of the above
b
During a baseball throw, a pitcher can throw the ball in such a way that the ball curves horizontally and then vertically in a downward direction. Given this observation, which of the following conclusions is correct? a. The baseball travels in a vertical direction first b. Gravity and a horizontal force causes the ball to curve c. A horizontal force causes the horizontal change in motion d. Gravity creates a net torque on the ball causing it to curve horizontally e. None of the above
b
During a front flip, if the individual tucks his/her legs, what will happen to the moment of inertia? a. It will increase relative to the starting position b. It will decrease relative to the starting position c. It will increase as long as the forces are centric d. It will decrease as long as the forces are eccentric e. Not enough information to solve
b
During forward progression, the anterior/posterior ground reaction force is typically an indication of: a. The line of progression b. The braking and the propulsion phases c. Initial contact and heel strike only d. 0.30 body weight e. Negative impulse
b
During the support phase of running, at initial foot-ground contact, if the biomechanical angle of the rear-foot is 0 degrees the foot is in a(n) ________ position. a. Everted b. Neutral c. Dorsiflexed d. Inverted e. None of the above
b
For normal consumer video cameras how much time elapses between pictures? a. 1/30th s b. 1/60th s c. 1/500th s d. 1/250th s e. cannot be determined from the information provided
b
If the direction of travel is positive and the change in speed is decreasing than the acceleration at that instant must be _______. a. Positive b. Negative c. Zero d. A or C e. None of the above
b
If the initial contact of a vertical ground reaction force curve is 2 to 3 body weights, than the graphs characteristics must have: a. A bimodal shape b. Two peaks for initial contact c. A passive peak only d. An acceleration and deceleration peak
b
Impulse can be calculated by computing the Force-Time Curve for the change in momentum. a. True b. False
b
In running what happens to the period of non-support as a person runs faster? a. Stays the same b. Increases c. Decreases d. Depends on the running strategy e. None of the above
b
Picture Time (s) Position (m) 0 0 0 1 0.05 1 2 0.1 2.1 3 0.15 4.1 4 0.2 7.1 5 0.25 3.1 6 0.3 3.4 7 0.35 6.1 What is the velocity between picture 3 and 4? a. 3 m/s b. 60 m/s c. -80 m/s d. 6 m/s e. None of the above
b
Picture Time (s) Position (m) 0 0 0 1 0.05 1 2 0.1 2.1 3 0.15 4.1 4 0.2 7.1 5 0.25 3.1 6 0.3 3.4 7 0.35 6.1 What was the distance traveled from 0.05 s to 0.25 s? a. -2.1 m b. 10.1 m c. 1.2 m d. 2.1 m e. None of the above
b
Spatial analysis deals with: a. Velocity b. Location of points of interest in space c. Acceleration d. Two-dimensions only e. All of the above
b
The vertical speed at the instant of release directly determines I. Height achieved from the ground II. Time it takes to reach maximum height III. How far a projectile travels a. I b. II c. I, II d. I, II, III e. None of the above
b
Which of the following statements is false? a. Looming is the perception of how quickly an object appears to be coming towards someone b. With negligible air resistance, vertical velocity at the instant of release is maintained until the object hits the ground c. If an object reaches its peak at 0.5 s the magnitude of the vertical velocity is 0.4 s and 0.6 s will be the same d. The factors that determine how far an object travels in the absence of air resistance are the horizontal velocity at takeoff and time in the air e. All of the above are true
b
A stride goes from Right Heel Strike of one foot to the Right Toe Off of the opposite foot. The presence of non-support defines a fast walk or run.
both statements are false
A person at rest is studied kinematically. However, a static person is only studied kinetically.
both statements are false.
27. Which of the following plots best indicated a negative acceleration and movement that is not forward (positive) only? (Hint: X-axis = time, Y-axis = velocity) Graph on Exam 1
c
A knee extension is an example of what type/class of lever? a. 1st class b. 2nd class c. 3rd class d. 4th class
c
A rollerblader, initially is gliding down a decline backward. Suddenly her skates catch a rock. Without sliding her head crashes into the concrete. Fortunately, she was wearing a helmet and other protective equipment and did not suffer any major injuries. Initially she was experiencing _______ motion, but then after hitting the rock she was experiencing ______ motion. a. Rectilinear, curvilinear b. Curvilinear, general c. Rectilinear, rotational d. Rectilinear, general e. None of the above
c
An analysis of a runner reveals the following: Displacement was 5 m. The number of strides was 3 and the time needed to cover the 5 m was 1.8 s. What was their average velocity? a. 1.43 m/s b. 2.67 m/s c. 2.78 m/s d. 1.87 m/s e. None of the above
c
Average gait velocity for an adult male is: a. 1.43 ft./s b. 1.37 m/s c. 1.43 m/s d. 1.28 m/s e. None of the above
c
Based on a standard Cartesian coordinate system, if the knee moves from coordinate point (-3,3) to (-4,3) which quadrant is it now located in? a. Quadrant I b. Quadrant II c. Quadrant III d. Quadrant IV
c
Based on a standard cartesian coordinate system, a single point that is found at (-3, 3) must be located in which quadrant? a. Quadrant IV b. Quadrant III c. Quadrant II d. Quadrant I e. Quadrant IV or II
c
Dr. Murray's favorite football team is the Oakland Raiders. Dr. Munkasy's favorite baseball team is the Boston Red Sox. a. Statement 1 is true and statement 2 is true b. Statement 1 is true and state 2 is false c. Statement 1 is false and statement 2 is true d. Statement 1 is false and statement 2 is false
c
During the support phase of walking, at initial foot-ground contact, if the biomechanical angle of the ankle is -10 degrees, the ankle is in a(n) _______ position. a. Everted b. Inverted c. Plantarflexed d. Dorsiflexed e. None of the above
c
During walking, the vertical ground reaction force is approximately how many body weights? a. 0.15 BW b. 0.5 BW c. 1-1.2 BW d. 2-5 BW
c
Event Time RFS1 0 RTO1 0.2 LFS1 0.283 LTO1 0.5 RFS2 0.567 RTO2 0.784 LFS2 0.867 RTO2 1.084 RFS3 1.151 How long did the first Left Stance last? a. 0.083 s b. 0.2 s c. 0.217 s d. 0.367 s e. None of the above
c
For a volleyball player to reach maximum block height what factor(s) must be maximized? I. Horizontal Velocity II. Angle at release III. Vertical Velocity IV. Resultant Velocity a. I, II b. I, III c. III d. IV e. None of the above
c
How many degrees are 1.23 radians? a. 14.5 π b. 20 π c. 70.11 degrees d. 75.11 degrees e. Not enough information provided
c
If a quarterback (mass = 85 kg) is trying to obtain a first down and is running towards the first down marker a 9 n/s, which an opposing linebacker (mass = 125 kg) tackles him head on with a velocity of -8.1/s. Which of the below observations is most correct? a. The players will collide and fall directly to the ground b. The quarterback will make the first down c. The quarterback will not make the first down d. The linebacker will continue moving with a positive velocity e. Not enough information to solve
c
If a runner's center of mass velocity was 10 m/s at an angle of 48 degrees what was their step length? a. 6.69 m b. 1.52 m c. 2.81 m d. 10.14 m e. none of the above
c
In gait, knee flexion and extension during the swing phase is largely due to actions at the hip. To examine this, one would conduct a... a. General kinematic analysis b. General kinetic analysis c. Dependent kinematic analysis d. Dependent kinetic analysis e. Relative kinematic analysis
c
In walking the swing phase is approximately _______. a. 62% b. 60% c. 38% d. 40% e. None of the above
c
Picture Time (s) Position (m) 0 0 0 1 0.05 1 2 0.1 2.1 3 0.15 4.1 4 0.2 7.1 5 0.25 3.1 6 0.3 3.4 7 0.35 6.1 What is the time associated with the velocity calculated in question immediately above(60 m/s)? a. 0.45 s b. 0.125 s c. 0.175 s d. 0.2 s e. None of the above
c
Picture Time (s) Position (rad) 3 0.15 0.61 4 0.20 0.40 5 0.25 0.14 6 0.30 5.81 7 0.35 5.34 8 0.40 4.80 9 0.45 4.54 What is the time of the angular velocity between 6 and 7? a. 0.25 s b. 0.3 s c. 0.325 s d. 0.275 s e. None of the above
c
Quantifying impulse is an example of a a. Dynamic analysis b. Kinematic analysis c. Kinetic analysis d. Static analysis e. None of the above
c
The description of angular motion without regards to its cause is a. Angular Kinetics b. Angular Velocity c. Angular Kinematics d. Angular Acceleration e. None of the above
c
Time (s) Acceleration (m/s) 0 2 0.5 3 1 0 1.5 -1.25 2 -1 2.5 -0.5 Given the above data table what was the change in velocity from 0.5 s to 1 s? a. -1 m/s b. -3.125 m/s c. 0.75 m/s d. 0.375 m/s e. None of the above
c
Velocity information can be calculated from acceleration data through the process of ___. a. Trigonometry b. Spatial coordinates c. Integration d. Derivation e. None of the above
c
What factor directly determines how high you jump? a. Resultant velocity b. Horizontal velocity c. Vertical velocity d. None of the above
c
What is biomechanics? a. Study of human movement from a science and art perspective b. Study of human movement from a physical sciences perspective c. Study of human movement from a physics and mechanics perspective d. Study of human movement from an anatomical and physiological perspective e. None of the above
c
What is the fundamental assumption associated with measuring time in the air to calculate jump height? a. Time up = Time down b. Loss height doesn't affect jump attempt c. Takeoff height = Landing height d. All of the above e. None of the above
c
What is the optimum angle of release (takeoff) to maximize range if the release (takeoff) height is greater than the contact (landing)? a. 45 degrees b. > 45 degrees c. < 45 degrees d. depends e. none of the above
c
What type of biomechanics corrects errors in the, or adapts the work environment design after an injury has occurred? a. Ergonomics b. Clinical c. Occupational d. Geriatric e. None of the above
c
When a ball rolls across a supporting surface but is slowing down is an example of what force acting on the ball to reduce its forward progress? a. Gravity b. Sliding friction c. Rolling friction d. Gravity and rolling friction e. B and C
c
Which of Newton's laws best express the measurement of ground reaction forces? a. Law I: Law of Inertia b. Law II: Law of Acceleration c. Law III: Law of Action-Reaction d. Law IV: Law of Four Dimensions e. None of the above
c
Which of the following does NOT describe a Qualitative Analysis? I. Numeric II. Visual observation III. Temporal IV. Kinetic a. II, IV b. I, III, IV c. I, IV d. II, III e. None of the above
c
Which of the following is true in regards to the angle at the hip joint? a. hip = thigh absolute - trunk absolute b. Can be calculated using absolute angles c. If the hip angle is positive, the hip is in flexion d. If the hip angle is positive, the hip is abducted
c
Which of these applications does not fall within the area of kinematic analysis? a. Analyzing golf club head speed b. Assessing poor postures c. Assessing reaction forces in the ankle joint d. Analyzing knee range of motion
c
Which parameter is defined as the "change in position over the change in time"? a. Displacement b. Distance c. Velocity d. Acceleration e. None of the above
c
X. Y Metatarsal 2.13 0.6 Ankle 2.03 0.75 Knee 2.16 1.36 Hip 1.77 1.93 C7 1.9 2.74 Given the above, what is the Thigh segment angle? a. 136.5 deg b. -55.6 deg c. 124.4 deg d. 46.4 deg e. None of the above
c
You are working with a golfer trying to increase the angular velocity of the club head just prior to contact with the golf ball. Which of the following suggestions would help increase the tangential velocity of the ball immediately after contact? a. Decrease the angular velocity of golf club b. Centripetal Acceleration at contact should be 0 c. Increase the distance from the shoulder to the club head by using a longer club d. Angular acceleration at contact should be maximized e. None of the above
c
You choose to use video analysis to get the jump height of volleyball players in actual game conditions. After doing a stopwatch analysis you find out that the playback device resolution is 30 pictures per second. For one athlete by counting pictures you find that they were in the air for 34 pictures. How long did it take to reach the peak? a. 0.283 s b. 0.39 s c. 0.567 s d. 2.779 s e. None of the above
c
Your client needs to increase their speed while crossing a street what strategy (s) would definitely work? I. Increase step rate II. Increase step length III. Decrease step length IV. Decrease step rate a. I b. II c. I, II d. I, II, or III e. None of the above
c
A 50m competitive swimmer who does well in the 1st and 2nd swimming heats is upset that she doesn't do well in the 3rd race heat of the day so she decides to swim 1000m intervals during practice to build up her endurance. What principle of training does her decision violate? a. Individualization b. Periodization c. Specificity d. Overtraining e. None of the above
c (You should train exactly how you perform)
An average gait velocity of a human female is approximately: a. 1.43 meters/second b. 1.37 meters/second c. 1.28 meters d. None of the above
d
As a therapist, you have working with a watermelon picker who must toss watermelons weighing approximately 2 kg. from the ground to a fellow employee up on an elevated truck bed. The melons travel up 2.5 m, forward 1.5 m, down 0.5 m. Assuming air resistance is negligible which fo the following statements from a projectile motion perspective are true. I. Time up > Time Down II. Vertical velocity at contact is greater in magnitude than the vertical velocity at release III. Horizontal distance the melon travels on the way up is greater than the horizontal distance traveled on the way down IV. Horizontal velocity at release is the same as the horizontal velocity at contact a. II, III b. II, IV c. III, IV d. I, III, IV e. None of the above
d
During the support phase of walking, if the biomechanical angle of the hip is negative the hip is in a(n) ______ position. a. Abducted b. Adducted c. Flexed d. Extended e. Internally rotated
d
For a camera, light is recorded through a lens onto a(n) a. MiniDV tape b. DVD c. CCD d. Aperature e. None of the above
d
From an athletic performance perspective, a coach is most likely interested in quantifying? a. Flight height b. Takeoff height c. Reach height d. Jump and reach height e. None of the above
d
How many degrees is 0.23 radians? a. 2π degrees b. 2.14π degrees c. 12.95 degrees d. 13.17 degrees
d
How much force would be needed to accelerate an object (mass = 2 kg) 10 m/s2? a. 1500 N b. 15 N c. 6.818 N d. 681.8 N
d
If a 100 N box sits on a table (FY) and the table (RY) begins to move in a downward direction, which of the following must be correct? a. ΣFY = 100 N b. ΣRY = 100 N c. ΣFY < 100 N d. ΣRY < 100 N e. Not enough information to solve
d
If a distance runner is getting consistently passed at the end of the race is would be a good idea to work on sprinting as part of an overall running program. In addition, the runner is likely not training hard enough and should increase their training load from 6 to 7 days per week a. Statement 1 is true, Statement 2 is true b. Statement 1 is false, Statement 2 is true c. Statement 1 is true, Statement 2 is false d. Statement 1 is false, Statement 2 is false
d
If the angular velocity was -7 rad/s, what was the angular velocity in deg/s? a. -0.122 deg/s b. -23000 deg/s c. -444.4 deg/s d. -401 deg/s e. None of the above
d
In running left single support is defined by a. Left heel strike to right heel strike b. Right toe off to right foot strike c. Left toe off to right foot strike d. Left heel strike to left toe off e. All of the above are true
d
In walking how is the period of double support defined? a. Left toe off to left heel strike b. Left heel strike to the next left heel strike c. Left toe off to right heel strike d. Left heel strike to right toe off e. None of the above
d
Kinematics are the... a. Description of spatial components of motion b. Description of the temporal components of motion c. Description of the causation of motion d. Description of spatial and temporal components of motion e. None of the above
d
Limb advancement during initial swing is approximately ______ percentage of the gait cycle. a. 10-30% b. 30-50% c. 50-60% d. 60-73%
d
One of the objectives of mid-stance during single limb support is to provide limb and trunk ____. a. Shock absorption b. Progression c. Acceleration d. Stability e. None of the above
d
Picture Time (s) Position (m) 0 0 0 1 0.05 1 2 0.1 2.1 3 0.15 4.1 4 0.2 7.1 5 0.25 3.1 6 0.3 3.4 7 0.35 6.1 What is the acceleration at 0.1 s? a. -20 m/s2 b. -410 m/s2 c. -40 m/s2 d. 290 m/s2 e. None of the above
d
The angle at a joint formed between the longitudinal axes of adjacent body segments is known as: a. Absolute Angle b. Adjacent Angle c. Segmental Angle d. Relative Angle
d
The video sampling rate is 60 pictures/s. If the jumper was in the air for 17 pictures how long was he going up? a. 3.5 s b. 0.70 s c. 0.28 s d. 0.14 s e. None of the above
d
There is a discrepancy between the flight height recorded by the jump mat and the Vertec during the same jump where the Vertec height records a higher jump height. Potential explanations might be... I. The Vertec is more accurate than the jump mat II. The jump mat is more accurate than the Vertec III. Takeoff height did not equal landing height for jump mat IV. Incorrect initial stand and reach measurement for Vertec a. I b. II c. I, III d. III, IV e. None of the above
d
What measures the amount of light in a given environment? a. Aperature b. Focal length c. Lux rating d. Lux e. None of the above
d
When a volleyball coach determines the value of a player at the net the most important value to measure is their flight height. The components that completely determine the jump and reach height are the takeoff height, flight height, and landing height. a. Statement 1 is true, Statement 2 is true b. Statement 1 is true, Statement 2 is false c. Statement 1 is false, Statement 2 is true d. Statement 1 is false, Statement 2 is false
d
When measuring a Law of Cosines joint angle when the joint is in anatomical position the angular measure is 0 degrees. Similarly, the Biomechanical joint angle is 180 degrees. a. Statement 1 is true, Statement 2 is true b. Statement 1 is true, Statement 2 is false c. Statement 1 is false, Statement 2 is true d. Statement 1 is false, Statement 2 is false
d
When reporting a joint angle (relative) which of the following conventions is true? a. Angles are reported with respect to the right horizontal at the distal end of the segment b. Rotations in the clockwise direction are reported as positive c. The axis of rotation is defined by an instantaneous center of rotation d. Angle measured may never be greater than 180 degrees e. None of the above are adhered to
d
Which of the following apply to the center of mass I. Point about which the weight on each side of the body is the same II. Point about which the body's mass is equally distributed in all directions III. Point at which all the mass may be considered to be concentrated IV. Point about which the body's weight is equally distributed in the vertical direction a. I, II b. III c. I d. II, III e. None of the above
d
Which of the following are examples of contact forces? a. Friction, fluid resistance, external muscle forces b. Ground reaction forces, external forces, and joint interaction forces c. Friction, fluid dynamics, and muscles forces d. Ground reaction forces, external forces, elastic forces e. None of the above
d
Which of the following below are the most likely to influence ground reaction force? a. Technique, acceleration, footwear b. Velocity, injury, footwear c. Technique, velocity, injury d. None of the above
d
Which of the following is considered true about vectors? a. Has magnitude and speed b. Can be combined using vector determinants c. Can be added or subtracted to determine the x or y components d. Can be resolved into its horizontal and vertical components e. None of the above
d
Which of the following is true regarding ground reaction forces? I. Can be measured with a force plate II. Broken down into four major components III. Are an example of newton's first law of motion IV. Typically scaled with respect to body weight a. I only b. I and II c. I,II, and III d. I and IV
d
Zero acceleration indicated that velocity is ___________. a. Increasing b. Decreasing c. Increasing and decreasing d. Staying constant e. None of the above
d
Kinematics... a. Examines forces b. Helps identify why injuries occur c. Examines anthropometrics d. Quantifies momentum
d (because all of the other answers relate to kinetics)
In gait, shank movement during the swing phase is largely due to actions at the hip. To examine this, one would conduct a
dependent kinematic analysis
Ergonomics
designing work environment to reduce risk of injury
From a video technology perspective what does progressive mean?
drawing every line of a picture consecutively
A focal length of 35 mm to 80 mm specifies a camera lens that... a. Is capable of stopping b. Is sensitive in dim light c. Is capable of capturing a wide field of view d. Is capable of zooming in significantly to magnify image size e. None of the above
e
Given an acceleration of -6 m/s2, which of the following statements is always true? a. Forward motion is occurring b. Backward motion is occurring c. Rate of change of position is constant d. Velocity is constant e. None of the above
e
If the Law of Cosines at the Hip is 140 deg, what is the Biomechanical Angle? a. -40 deg b. 40 deg c. 2.8 rad d. 0.7 rad e. Not enough information provided
e
Impulse can be described as the: a. Change in momentum/the area under force-time curve b. Change in velocity/change in time only c. Area under the Force-Time curve relative to body weight d. Are under the Force-Time curve relative to time e. None of the above
e
Linear kinetics can be described as: a. Any interaction between two objects that causes change in velocity and acceleration b. Containing magnitude, direction, point of application, and acceleration c. Being measured in kg-m/s d. A force interaction between two objects that causes an acceleration change e. Containing line of action, direction, magnitude, and point of application
e
Picture Time (s) Position (rad) 3 0.15 0.61 4 0.20 0.40 5 0.25 0.14 6 0.30 5.81 7 0.35 5.34 8 0.40 4.80 9 0.45 4.54 What was the angular velocity in degrees per second at picture 7? a. -10.2 deg/s b. -27.93 deg/s c. -500 deg/s d. 1600 deg/s e. None of the above
e
The biomechanical quantitative approach that helps identify why injuries occur and how they can be prevented is a. Kinematic b. Dynamic c. Quantitative d. Dependent kinetic e. None of the above
e
To determine if flexion of the knee during the initial swing phase of gait occurred due to the knee flexor muscles one would conduct a a. General kinematic analysis b. Relative kinetic analysis c. Dependent kinetic analysis d. Dependent kinematic analysis e. Relative kinematic analysis
e
When looking at a captured video it may appear blurry because? a. The depth of field was insufficient b. The shutter speed was set too low c. The focus setting was in the automatic mode d. The aperture was too large e. All of the above
e
When setting up a free body diagram, which of the following are the most important in order to understand the forces acting on a body? a. The reference system b. All of the forces that act on the system c. The point of application of all forces d. The direction in which all forces act e. All of the above
e
Which factors determine a projectile's trajectory? I. Projection Speed II. Projection Angle III. Projection Acceleration IV. Projection Height a. I, IV b. I, II c. II, IV d. II, III e. None of the above
e
Which of the following mathematical equations will solve for the relative angle? a. θ=tan-1[(Yproximal-Ydistal)(Xproximal-Xdistal)] b. θ=cos-1[(a2-b2-c2)(-2bc)] c. θ=θabsolute proximal-θabsolute distal d. a2=b2+c2-(2bc)(tanθ) e. b and c
e
You are trying to help a person improve their vertical jump. What factor (s) are used to directly calculate how high they jump? I. Horizontal velocity II. Vertical velocity III. Resultant velocity IV. Gravity V. Time in the air a. I, IV b. I, II, V c. I, V d. I, II, IV, V e. None of the above
e
Which type of biomechanics focuses on reducing the risk of injury in the workplace?
ergonomics
Kinematics...
examines forces, helps identify why injuries occur, examines anthropometrics, and quantifies momentum
Kinematics is important because examines the effect of forces examines acceleration describes the movement helps identify why injuries occur and how to prevent them
examines the effect of forces examines acceleration describes the movement
Velocity is to speed as...
final - initial is to path traveled
For the Department of Health Sciences and Kinesiology at Georgia Southern University, what is the definition of Kinesiology? The study of human movement by describing what happened and examining its sources by combining the biomedical, psychosocial, organizational and societal aspects of health, disease, and health care None of the other included answers from a physical sciences perspective from a science and art perspective
from a science and art perspective
Gait
generically, study of the ambulation from one place to another, but specifically study of the biomechanics of walking
What happens to the period of support as a person runs faster
it gets shorter
In a 100 m race the most important phase is...
it's a balance of velocity buildup, maintenance, and decrease
Spatial analysis deals with?
location of points of interest in space
Kinematics quantifies mechanical work None of the included answers is correct describes the cause of injury directs conditioning, training, and rehabilitation programs describes the cause of superior performance
quantifies mechanical work
A person standing on a skateboard is gliding down a long ramp. She is experiencing what type of motion?
rectilinear
Occupational Biomechanics
rehabilitation and modification of the work place to reduce risk of injury after an injury has. occurred
A better video image is the result of
small aperture, high shutter speed
After 7 m/s, which of the following is considered the main method of increasing speed?
step rate
Clinical
study of individual biomechanical challenges to movement practiced often by PTs and ATS
Biomechanics is?
use of the tools of mechanics and physics to study human movement
