KIN 300 Quizzes

If a projectile has an initial vertical velocity of 8m/s and an initial horizontal velocity of 10m/s, which of the following is true? A. The vertical velocity at the apex is 0m/s B. The vertical velocity at the apex is 8m/s C. The horizontal velocity at the apex is 0m/s D. The horizontal velocity at the apex is 10m/s

A. The vertical velocity at the apex is 0m/s

If the dynamic frictional force is 15N and the weight of an object is 125N, what is the coefficient of friction between the object and the surface it slides on? A. 0.12 B. 8.33 C. 0.24 D. 2.11

A. 0.12

If an individual is running at a velocity of 3 m/s and increases that to a velocity of 5 m/s over a 10 second time period, what was his acceleration? A. 0.2 m/s/s B. The only reason to run is when a bear is chasing you....or a tiger depending on where in the world you are. C. 4 m/s/s D. 2 m/s/s E. 5 m/s/s

A. 0.2 m/s/s

If an individual swims 1500m in a time of 20 minutes, what is their average velocity? A. 1.25 m/s B. 0.8 m/s C. Michael Phelps! Gold medals! And that's all I know about swimming... D. 75 m/s E. 3.35 m/s

A. 1.25 m/s

If 100N of force is applied to a 3kg object, how much does the object accelerate? A. 33.3m/s^2 B. Where did I put that calculator... C. 0.03m/s^2 D. 3.3 m/s^2 E. 300m/s^2

A. 33.3m/s^2

50N applied to the left, 20N applied to the left, and 30 N applied to the right gives a resultant force of what? A. 40N to the left B. 40N to the right C. 100N to the right D. 100N to the left

A. 40N to the left

If there is a horizontal force of 50N and a vertical force of 20N, what is the resultant force magnitude? A. 53.9N B. 45.8N C. 62.4N D. 70N

A. 53.9N

Solve for X: X2 + 10 = 50 A. 6.3 B. 20 C. 12.4 D. 8.2

A. 6.3

If a resultant force of 70N has a horizontal component of 30N, what is the angle of the resultant force relative to the horizontal force? A. 64.6 deg B. 23.2 deg C. 25.4 deg D. 66.8 deg

A. 64.6 deg

If a projectile is launched from a height of 10m with a resultant velocity of 10m/s at an angle of 40 degrees relative to the horizontal, what is the horizontal velocity of the projectile when it hits the ground? A. 7.7 m/s B. 6.4 m/s C. 10 m/s D. Hated trig four weeks ago and still hate it... E. 8.4 m/s

A. 7.7 m/s

If an object experiences 10N of friction force while sliding across the floor and has a friction coefficient of 0.13, how much does the object weigh? A. 76.9 N B. 54.2 N C. Did you read the textbook chapter about this topic? D. 1.3 N E. 37.3 N

A. 76.9 N

In the velocity-time curve reaches a plateau (slope=0), what does that mean for the acceleration value? A. Acceleration equals zero B. Answer 4 of 4 text Edit Answer 4 of 4 text Honey badger don't care about acceleration C. Acceleration reaches a minimum D. Acceleration reaches a maximum

A. Acceleration equals zero

Which of the following has the most linear inertia? A. An airplane B. A softball C. Football Lineman D. An arrow E. Derek Zoolander

A. An airplane

When we measure the pathway followed rather than a straight line from start to finish, what are we measuring? A. Distance B. Acceleration C. Velocity D. Displacement E. Hopefully you're not doing this at 11:30pm on Friday...

A. Distance

Forces which are considered concurrent can be best described by which of the following descriptions? A. Forces acting on the same point but not on the same line B. Bro, no idea... C. Forces acting on neither the same line nor point D. Forces acting on the same line and the same point

A. Forces acting on the same point but not on the same line

Linear inertia is defined by which of the following variables? A. Mass B. Well this is a new word....I bet this nerd wrote this question while watching Star Wars C. Velocity D. Force E. Acceleration

A. Mass

Which of the following is NOT a reason to study biomechanics? A. Physiological improvement B. Injury Prevention C. Training improvement D. Sport technique improvement

A. Physiological improvement

What do we consider to be the "rigid bodies" in biomechanics? A. Skeletal system B. Internal forces C. Physiological system D. Muscle system

A. Skeletal system

A body's acceleration is proportional to the net force applied to the body and inversely proportional to what? A. The mass of the body B. The weight of the body C. The velocity of the body D. This sounds philosophical...I don't care for such nonsense E. The acceleration of the body

A. The mass of the body

The coefficient of friction is based on what? A. The material properties of two interacting surfaces B. Say what? C. The weight of an object D. The surface area of the moving object

A. The material properties of two interacting surfaces

Which of the following does not affect the flight of a projectile? A. Weight of the projectile B. Height of release C. Velocity of release D. Bro...it all matters...gainz for days E. Angle of release

A. Weight of the projectile

If an individual is pushing on a table perfectly horizontal to the right with a force of 200N and another individual is pushing to the left with a force of 300N, what is the resultant force the table is experiencing? A. 100 N to the right B. 100 N to the left C. 360.6 N to the left and down D. Why is he still quizzing us on this??? Maybe it's important? E. 500 N down

B. 100 N to the left

2 radians equals how many degrees? A. pi....mmmmmmmm, pie B. 114.6 C. 57.3 D. 97.5

B. 114.6

If a force of 200N is applied at an angle of 25 degrees relative to the right horizontal, how much of the force is in the vertical direction? A. 93.3N B. 84.5N C. 181.3N D. 141.2N

B. 84.5N

Which of the following is a way to describe Biomechanics? A. The study of the structure and function of biological systems by means of the methods of mechanics B. All of these answers C. The study of motion and the forces which cause those motions in biological structures D. The science that describes and predicts the motions of living bodies

B. All of these answers

Which of the following can be classified as an internal force? A. Ball hitting you in the face B. Bone pushing on Bone C. Air resistance D. Colliding with an opponent

B. Bone pushing on Bone

One day when you're having a bro-down in the gym, you drop a 100 pound dumbbell on your foot. What is your foot experiencing? A. Non-contact force B. External force C. Internal force D. Muscle force E. Answer 4 of 4 text Edit Answer 4 of 4 text The force of my tears dropping on it as I cry...

B. External force

Which of the following is true concerning forces? A. Forces do not exist in the body outside of the muscles B. Forces can be absorbed by the body C. External forces do not impact the amount of muscle force produced D. Friction force is not related to the mass of an object

B. Forces can be absorbed by the body

Which of the following is true concerning forces? A. Forces are only the result of motion B. Forces can cause motion or be the result of motion C. Forces only cause motion D. All forces are internally constructed

B. Forces can cause motion or be the result of motion

If I stand on a scale while in an elevator that is accelerating upwards, what will the scale read? A. The same B. More than it would if the elevator were not accelerating C. Less than it would if the elevator were not accelerating D. Doesn't matter....no more elevator rides thanks to covid....ridiculous!!!!!

B. More than it would if the elevator were not accelerating

Friction between two surfaces not moving relative to one another is known as what? A. Normal friction B. Static friction C. Dynamic friction D. Kinetic friction

B. Static friction

In the vertical ground reaction force profile, the second peak is known as what? A. The body weight B. The propulsion peak C. The landing force D. The loading peak

B. The propulsion peak

If I hit a brick wall with 125 pounds of force, what happens? A. The wall absorbs 50% of the force B. The wall hits me back with 125 pounds of force C. Nothing. it's a wall.... D. I smash through the wall because bricks cant withstand 125 pounds of force

B. The wall hits me back with 125 pounds of force

If a golf ball is hit with a velocity of 40 m/s at an angle of 25 degrees relative to the right horizontal, how fast is the horizontal velocity of the ball? A. 18.6 m/s B. 27.5 m/s C. 36.3 m/s D. Is this the Bugs Bunny gif or the Road Runner gif? E. 16.9 m/s

C. 36.3 m/s

If a force of 35N is applied to an object horizontally to the left and 25N vertically upward, what is the resultant force? A. 10N down and right B. 60N up and left C. 43.01N up and left D. 40N down and right

C. 43.01N up and left

Which of the following activities occurs predominantly in the frontal plane? A. Jumping B. Baseball swing C. Cartwheel D. Walking

C. Cartwheel

Which of the following describes forces which have the same line of action? A. Concurrent forces B. Internal forces C. Colinear forces D. External forces

C. Colinear forces

Shoulder abduction occurs in which plane? A. Sagittal B. Longitudinal C. Frontal D. Transverse

C. Frontal

During internal rotation at the acetabularfemoral joint (hip joint), which axis does the femur rotate about? A. Medial-lateral B. Transverse C. Longitudinal D. Anterior-posterior

C. Longitudinal

In the position (Y)-time (X) curve, what does a negative slope represent? A. Negative slopes are not allowed...no negativity! B. Unrelated to velocity C. Negative velocity value D. Positive velocity value E. Zero velocity value

C. Negative velocity value

Newton's 1st law refers to constant motion. What defines a constant motion? A. A constant speed for the object B. Newton is clearly a lunatic....no such thing as constant motion C. No net acceleration D. No change in direction of the object E. Equal and opposite reaction

C. No net acceleration

Frictional force is the coefficient of friction multiplied by what? A. Applied force perpendicular to the friction force B. Normal force parallel to the friction force C. Normal force perpendicular to the friction force D. Applied force parallel to the friction force

C. Normal force perpendicular to the friction force

When a person/object is in flight (off the ground), what direction is the acceleration vector pointed? A. To infinity.....and beyond!!!! B. In the direction of the velocity vector C. Towards the ground D. Up, up, and away! E. Tangent to the pathway of travel

C. Towards the ground

Vectors differ from scalars in which way? A. Vectors have direction only, scalars have magnitude and direction B. Vectors have magnitude and direction, scalars have direction only C. Vectors have magnitude and direction, scalars have only magnitude D. Vectors have magnitude only, scalars have magnitude and direction

C. Vectors have magnitude and direction, scalars have only magnitude

Which of the following best describes kinetics? A. the branch of mechanics subject to accelerations B. the description of human motion, with considerations of time and space C. the study of forces and the motions they cause of occur as a result of D. the beach of mechanics not subject to accelerations

C. the study of forces and the motions they cause of occur as a result of

If a soccer ball is kicked at a velocity of 25 m/s at an angle of 55 degrees relative to the right horizontal, what is the vertical velocity of the ball? A. 17.2 m/s B. 23.6 m/s C. Futbol is the greatest sport in the world.....Messi or Ronaldo???? Or someone else??? D. 20.5 m/s E. 14.3 m/s

D. 20.5 m/s

If a resultant force vector has a horizontal component of 12N to the right and a vertical component of 17N up, what is the direction of the resultant vector? A. 35.2 degrees below the left horizontal B. 35.2 degrees above the right horizontal C. 54.8 degrees below the left horizontal D. 54.8 degrees above the right horizontal

D. 54.8 degrees above the right horizontal

Which of the following best describes a vector? A. A quantity that has a direction and no magnitude B. A quantity with no direction and no magnitude. C. A quantity that has a magnitude but no direction D. A quantity with both direction and magnitude

D. A quantity with both direction and magnitude

Which of the following can be classified as an external force? A. ACL being stretched B. Ligament pulling on a bone C. Biceps tendon pulling on the radius D. Friction between your skin and concrete after you eat it on your skateboard

D. Friction between your skin and concrete after you eat it on your skateboard

What is the minimum amount of information needed to track linear kinematics? A. Three points B. Seven points......touchdown!!!!! C. Four points D. One point E. Two points

D. One point

If the femoral head smashes into the acetabulum with 100N of force, what happens? A. The femur breaks, you cry a bit, do some physical therapy, and you're back almost as good as new. B. The femoral head dissipates the force C. The acetabulum absorbs the force and the femoral head snaps D. The acetabulum pushes back with 100N of force E. The bone remodels based on this new load.

D. The acetabulum pushes back with 100N of force

The process of breaking any vector into horizontal and vertical components is known as what? A. Vector composition B. Vector subtraction C. Vector addition D. Vector resolution

D. Vector resolution

Which of the following is a kinematic measurement? A. Force B. Torque C. Power D. Velocity

D. Velocity

How do speed and velocity differ? A. They are the same B. Move answer 4 of 4 Move answer 4 of 4 up Move answer 4 of 4 down Answer 4 of 4 text Edit Answer 4 of 4 text Velocity is related to distance, speed is related to displacement C. I vaguely remember a Speedy Gonzalez gif in class.... D. Velocity is a vector, speed is a scalar E. Velocity is a scalar, speed is a vector

D. Velocity is a vector, speed is a scalar

If a rock is dropped from a cliff straight down and has a velocity of 20m/s right before it hits the ground, how long did it take to fall from the cliff? A. The Rock was in Moana, right??? Maui! B. 1.44s C. 1.82s D. 2.56s E. 2.04s

E. 2.04s

If a ball is kicked with a velocity of 40m/s at an angle of 35 degrees relative to horizontal, what is its vertical velocity? A. 28.0m/s B. Not enough information to solve C. Just waiting for that third season of Ted Lasso D. 32.8m/s E. 22.9m/s

E. 22.9m/s

If a runner has an average velocity of 5.5 m/s over a 1 minute period, how much was his displacement (assuming he went in a straight line the entire minute)? A. Did he run through a wall and leave a human-shaped hole? B. 10.9 m C. 220 m D. 110 m E. 330 m

E. 330 m

If an object is in flight for 2 seconds and covers a horizontal displacement of 10m with an initial horizontal velocity of 5 m/s, what is the projectile's final horizontal velocity? A. -14.62m/s B. 0m/s C. He asks a lot of these questions.... D. 10m/s E. 5m/s

E. 5m/s

If an object has an initial horizontal velocity of 9.81m/s and gravitational acceleration is -9.81m/s/s and the projectile is in flight for 1 second, what is the final horizontal velocity of the projectile? A. -9.81 m/s B. Not enough info C. I see what he did there... D. 0 m/s E. 9.81 m/s

E. 9.81 m/s

The change in position of an object references it's what? A. Yoga poses are changes in position.... B. Velocity C. Speed D. Distance E. Displacement

E. Displacement