Physics Midterm Multiple Choice
What type of motion does an object have with positive velocity, but negative acceleration? a the object is slowing down b the object is speeding up c the object is scalar d the object is at rest
a the object is slowing down
The best angle for maximum range (horizontal distance) of a projectile is _______. a 90 degrees b 30 degrees c 45 degrees d 15 degrees
c 45 degrees
The rate at which an object traveling in a straight line at a constant speed? a scalar magnitude b average velocity c acceleration d displacement
c acceleration
The greek symbol for "change in" is _________. a degree b Mu c delta d theta
c delta
When an object is in equilibrium, the net force is ________. a changing b positive c negative d zero
d zero
A ball is tossed straight up at 6 m/s to a girl positioned at the top of high wall. What is the final velocity (Vf) of the ball when she catches the ball at its highest point? a zero b 60 m/s c 6 m/s d 12 m/s
a zero
Which of the following is equal to 49 L? a 49000 mL b 0.000049 c 0.049 mL d 4900 mL
a 49000 mL
The best angle for maximum height (delta y) of a projectile is ___________. a 90 degrees b 180 degrees c 45 degrees d 30 degrees
a 90 degrees
Newton's First Law of Motion is also known as the Law of _________. a Inertia b Inclined Planes c Buoyancy Force d F=ma
a Intertia
The greek for the coefficient of friction is _________. a Mu b theta c delta d omega
a Mu
Which of the following is not an example of projectile motion? a a speed skater rounding a curve on a track b a rock being kicked c a softball being thrown a a nerf gun being shot
a a speed skater rounding a curve on a track
According to Newton's Second Law of Motion, when an unbalanced force is applied to an object that has mass, the object will _______ in the same direction that the force is applied. a accelerate b stay at rest c rotate towards the center d fall due to gravity (Fg)
a accelerate
In the Picket Fence Lab for Free-Fall, the slope of the graph for velocity verses time is ________. a acceleration b curved c force d velocity
a acceleration
To find how far an object travels in the horizontal direction when launched, which of the following formulas is correct? a d=vt b X=Xf-Xi c d=v/t d a^2+b^2=c^2
a d=vt
The final position Xf minus the initial position Xi is the _________. a displacement b time interval c distance d average velocity
a displacement
The longest leg of a right triangle is called the __________. a hypotenuse b opposite leg c adjacent leg d Pythagorean
a hypotenuse
The force that is exerted on one surface by another when two surfaces are rubbing against each other at rest is called ________. a static friction b mu c kinetic friction d coefficient or friction
a static friction
What is the initial velocity (Vi) of a diver jumping off a 10 m high platform into an Olympic pool? a 100 m/s b 0 m/s c 0 m/s^2 d 10 m/s
b 0 m/s
A motorcycle is traveling with a uniform speed of 66 km/hr along a straightway. What is the time it takes for the motorcycle to cover 3.0 km? a 0.22 hr b 0.045 hr c 22 hr d 2.2 minutes
b 0.045 hr
A bus travels from Fort Worth to Brownsville in 10.5 hours with a velocity of 65 mph to the south. What is the bus's displacement? a 6.2 miles south b 682 miles south c 682 miles north d 341 miles south
b 682 miles south
Decide which of the following prefixes is the largest: milli, deka, centi, or deci. a centi b deka c milli d deci
b deka
When using the Scientific Method to investigate problem, which step is an educated explanation for what is going to happen and why during the investigation? a problem/purpose b hypothesis c research d conclusion
b hypothesis
The term used to describe the sum of two or more forces is called ________. a applied force (Fapp) b net force (Fnet) c weight (Fg) d FgII
b net force (Fnet)
The for the sin function is __________. a adjacent/ hypotenuse b opposite/ hypotenuse c opposite/ adjacent d adjacent/ opposite
b opposite/ hypotenuse
The normal force of an object sitting on an inclined plane is always _________. a parallel to the inclined plane b perpendicular to the incline plane c equal but opposite Fg d perpendicular to the ground
b perpendicular to the incline plane
If a hockey puck slides to the left, the force of friction will be to the ________. a down b right c left d up
b right
The wheel of a Ferris wheel is ________. a revolving b rotating c 2pir d average velocity
b rotating
What does the slope of a distance verses time graph represent? a acceleration b velocity c time d position
b velocity
What is the acceleration in the Y-direction of a projectile just before it lands? a not enough information b 0 m/s^2 c -9.8 m/s^2 d 9.8 m/s^2
c -9.8 m/s^2
Which of these is a reasonable value for the coefficient of friction between two surfaces? a 0.25 N b -1.7 N c 0.25 d 1.7
c 0.25
How fast is Dr. Scheer jogging if he covers 10 meters in 2 seconds? a 0.20 m/s b 20 m/s c 5 m/s d 1 m/s
c 5 m/s
Which object has more inertia? a 18 Wheel Semi Truck b Chevy 150 Truck c Earth d Toy Truck
c Earth
Which of the following does not represent Newton's Second Law? a F=ma b a=F/m c a=m/F d m=F/a
c a=m/F
An object with no net force is __________. a moving at a constant speed b at rest c either at rest or moving at a constant speed d accelerating
c either at rest or moving at a constant speed
Volume was measure with which instrument or tool in the lab? a spring balance b triple beam balance c graduated cylinder d thermometer
c graduated cylinder
The force that is needed to get an object to start moving from at rest is __________ than the force needed to keep that same object moving. a zero b less c greater d equal to
c greater
The _______ variable is the factor that is changes or manipulated in an experiment. a hypothesis b dependent variable c independent variable d control
c independent variable
When you are driving around a curve, the centripetal acceleration acting on the car is ________. a outward b tangent to the curve c inward d not enough information
c inward
A force is a ________. a never caused by a change in motion b inverse to acceleration c push or pull d always zero
c push or pull
All of the valid digits in a measurement are called __________. a non-zero digits b insignificant c significant figures d uncertain
c significant figures
The normal force (Fn) refers to ________. a the parallel acceleration of a body b the parallel force exerted by a surface c the perpendicular contact force exerted by a surface on an object d the perpendicular force of gravity
c the perpendicular contact force exerted by a surface on an object
Determine the proper measurement for the length of the line using the ruler provided.
check the review
the arrows on target are ________. a none of the above b precise c Bothe precise and accurate d accurate
check the review accurate: precise:
The acceleration due to Earth's gravity is _______. a -9.8 ft/s^2 b 9.8 m/s^2 c -9.8 mi/s^2 d -9.8 m/s^2
d -9.8 m/s^2
What is the y-velocity (vertical velocity) of an object at its maximum height when launched at an angle with respect to the ground? a cos 45 degrees b equal to the initial velocity at launch c 90 degrees d 0 m/s
d 0 m/s
What is the acceleration of a horizontally launched marble flicked off a table at a constant speed of 4 m/s? a 40 m/s^2 b -9.8 m/s^2 c 4 m/s^2 d 0 m/s^2
d 0 m/s^2
An airplane that is moving at the speed of 245 mph from the North to the South has a velocity that is _______. a 245 m/s left b 245 mph north c 245 m/s right d 245 mph south
d 245 mph south
How many significant figures are in 0.00539 kg? a 5 b 6 c 1 d 3
d 3
Convert 877 kilograms into milligrams. a 0.000000877 b 877,000 mg c 8.77 x 10^3 d 877,000,000 mg
d 877,000,000 mg
Which of the following is not an example of projectile motion? a an arrow being shot at a target b a volleyball served over a net c baseball hit by a bat d an eagle flying
d an eagle flying
A hunter shoots an arrow horizontally from the top of castle wall. Which of the following curves bests describes the path of the arrow? a hyperbola b ellipse c circle d parabola
d parabola
On a position (displacement) verses time graph, what does a horizontal line indicate? a the object's acceleration is negative b the object is moving at a constant velocity c the object's acceleration is positive d the object is at rest
d the object is at rest
A ________ has Bothe magnitude and direction. a curves b slope c vector d scalar
d vector
What is the acceleration of an object traveling in a straight line at a constant speed? a positive b -9.8 m/s^2 c negative d zero
d zero