Free Printable AP Physics 1 review

Worksheets

AP Physics 1 review

Total questions: 130

Worksheet time: 2hrs 57mins

Name

Class

Date

The diagram shows all of the forces acting a ball. Which way is the ball moving?

down

there is not enough information

The slope of a velocity-time graph is equal to...

displacement

change in velocity

acceleration

net force

A ball is tossed upward, at an angle of 45 degrees above the horizontal. Which position-vs-time diagram could represent the horizontal component of the ball's motion?

A ball is released from rest, and free-falls with no air resistance. Which graph could represent the ball's velocity-vs-time?

A ball is released from rest, and free-falls with no air resistance. Which graph could represent the ball's acceleration-vs-time?

Two boxes sit on a frictionless surface. An external applied force of 24 N pushes the blue box as shown. What is the magnitude of the force that the blue box exerts on the red box?

4 N

8 N

16 N

24 N

A 2 kg box is initially at rest when it is pushed along a frictionless surface. The graph shows the net force on the box as a function of time. For the first 4 seconds, how much work is done on the box?

16 J

32 J

48 J

64 J

Not enough information to answer.

The period of a pendulum with a length L is 4 seconds. What is the period of a pendulum with length 4L?

2 seconds

4 seconds

8 seconds

16 seconds

The period of a pendulum is 4 s. If the mass of the pendulum bob is doubled, what will the new period of the pendulum be?

2 s

4 s

8 s

16 s

10.

A toy car drives around a circular track at a constant speed of 2 m/s. The radius of the track is 8 m. What is the magnitude of the car's acceleration?

Zero

0.25 m/s/s

0.50 m/s/s

2.0 m/s/s

11.

A small planet P orbits a large star S. The star S exerts a gravitational force F on Planet P. Which statement is true?

Planet P exerts a gravitational force equal to F on Star S.

Planet P exerts a gravitational force smaller than F on Star S.

Planet P exerts a gravitational force greater than F on Star S.

12.

A small planet P orbits a large star S. The planet moves from point A to point B. What is true about the angular momentum of planet P about Star S?

The angular momentum of the planet is greater at point A.

The angular momentum of the planet is greater at point B.

The angular momentum of the planet is the same at both points A & B.

13.

How can you find displacement from a velocity-vs-time graph?

Displacement will be equal to the area under the graph.

Displacement will be equal to the slope of the graph.

Displacement will be equal to the y-intercept of the graph.

Displacement will be equal to the height of the graph at t = 0.

14.

Jogging Jake runs along a train flatcar that moves at the velocities shown. From greatest to least, rank the relative velocities of Jake as seen by an observer on the ground. (Call the direction to the right positive.)

A > B > C > D

B > C > A > D

C > A > B > D

D > C > A > B

15.

Shown below are three separate pairs of point charges, pairs A, B, and C. Assume the pairs interact only with each other. Rank the magnitudes of the force between the pairs, from largest to smallest.

C > B > A

B > A > C

A > B > C

C > A > B

16.

The roller coaster ride starts with the car at rest at point A. Rank from the greatest to least the car's speed at each point.

A > B > C > E > D

A > E > C > B > D

D > E > A > B > C

D > B > C > E > A

17.

The roller coaster ride starts with the car at rest at point A. Rank from the greatest to least the car's kinetic energy at each point.

A > B > C > E > D

A > E > C > B > D

D > E > A > B > C

D > B > C > E > A

18.

If a boomerang is thrown 20m in a straight line and returns exactly to the spot it was thrown what is its displacement?

20m

40m

-20m

19.

A charge of +q is located 1.5 m to the right of point D. Where would you have to place a charge of +2q so the electric field at D would be zero?

2.1 m left of D

4.6 m left of D

2.1 m right of D

3.6 m left of D

20.

Which collision are both momentum and kinetic energy conserved?

Elastic Collisions

Perfectly Inelastic Collisions

Inelastic Collisions

none of the above

21.

A 534 kg X-Wing flies into the stationary 18,423 kg Death Star at a speed of 159 km/s. The X-Wing then flies at a speed of 137 km/s. What speed is the Death Star moving?

22 km/s

4,605 m/s

638 m/s

2,146 m/s

22.

In a frictionless ice rink, a 0.249 kg hockey puck, initially at rest, is hit by a 0.375 kg hockey stick. After the collision, the hockey puck moves to the left with a velocity of 0.125 m/s and the hockey stick continues to move forward with a velocity of 0.651 m/s to the left. What speed was the hockey stick initially moving?

0.734 m/s

1.06 m/s

0.583 m/s

0.916 m/s

23.

The rotational equivalent to d (distance), v (velocity) and a (acceleration) are?

m, m/s, m/s^2

theta, omega (lowecase), alpha

x, x/t, alpha

rho, mu, Omega

24.

The center of mass is:

the exact middle

the heaviest part

the point at which you can balance with one finger

the idea that mass is concentrated throughout

25.

How do you get the maximum torque?

longer lever arm and more force at an acute angle

shorter lever arm with more force perpendicularly

shorter lever arm and more force perpendicularly

longer lever arm with more force perpendicularly

26.

The moment of inertia:

is synonymous with mass

does not depend on where the mass is located

resistance to a change in rotational inertia

more resistance to change = less inertia

27.

Dynamics is:

the description of motion

the study of what results from forces

what causes motion

the combination of kinematics and circular motion

28.

Free Body diagrams do all of the following EXCEPT:

calculates the resultant force

illustrate all the forces within a system

helps calculate the net force

accounts for all forces acting on an object

29.

A force F is acting on an object of mass m, giving it an acceleration of a. What is the acceleration if the mass is halved and the force quadrupled?

it is divided by eight

it is multiplied by eight

it is divided by two

it stays the same

30.

The force needed to move a 50 kg crate on the carpet with the coefficent of static friction of 0.5 is?

25 N

250 N

50 N

500 N

31.

A 3 kg box tied to a 2 kg box tied to a 1 kg box are all pulled by a string attached to the front of the 3 kg box. The are being pulled with a force of 18 N. Which of the following is a correct comparisons of the tension in front of each box?

T1 > T2 > T3

T1 = T2 = T3

T1 > T2 = T3

T3 > T2 > T1

32.

Three forces act on a point: 3 N at 0°, 4 N at 90°, and 5 N at 217°. What is the net force?

2.8 N

3.6 N

1.4 N

20.5 N

33.

Three forces act on a point: 3 N at 0°, 4 N at 90°, and 5 N at 217°. What is the net force?

2.8 N

3.6 N

1.4 N

20.5 N

34.

Add the following vectors and determine the resultant.3.0 m/s, 45 deg and 5.0 m/s, 135 deg and 2.0 m/s, 60 deg

3.56m/s, 93.2 deg

2.45m/s, 23.0 deg

7.40m/s, 87.3 deg

7.40m/s, 93.2 deg

35.

A car can go from 0 m/s to 60 m/s in 10 seconds. What is the acceleration of the car?

6 m/s²

60 m/s²

180 m/s²

10 m/s²

36.

A runner has an average velocity of 4 m/s and travels for 12 seconds along the track. What is the distance traveled by the runner during this time?

48 m

12 m

3 m

24 m

37.

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

750 seconds

35 seconds

0.3 seconds

3.3 seconds

38.

A ball is thrown upwards and caught when it comes back down at the same height. In the absence of air resistance, the speed of the ball when caught would be

less than the speed it had when thrown upwards.

more than the speed it had when thrown upwards.

the same as the speed it had when thrown upwards.

need more information to determine.

39.

In a lab experiment, a ball is rolled down a ramp so that it leaves the edge of the table with a horizontal velocity v. If the table has a height h above the ground, how far away from the edge of the table, a distance x, does the ball land? You may neglect air resistance in this problem.

$\frac{2v^2}{g}$

$v\cdot\sqrt[]{\frac{2h}{g}}$

$\frac{2vh}{g}$

$\frac{2h}{g}$

40.

What location on the coaster has the greatest potential energy?

41.

What type of friction is not moving?

static

dynamic

kinetic

rolling

42.

Which of the following correctly ranks the displacement Δx for the three segments of the object's motion?

43.

A student is asked to determine the work done on a block of wood when the block is pulled horizontally using an attached spring. The student is supplied with a spring scale, a stopwatch, and a meterstick. Which of the following graphical analysis techniques will allow the student to determine the work done on the block by the string?

Graphing the force as a function of time and calculating the slope

Graphing the force as a function of time and calculating the area under the curve

Graphing the force as a function of distance and calculating the slope

Graphing the force as a function of distance and calculating the area under the curve

44.

Block A and Block B move toward each other on a level frictionless track. Block A has mass m and velocity +v. Block B has mass 2m and velocity -v. The blocks collide, and during the collision the magnitude of the net force exerted on block A is F. What is the magnitude of the net force exerted on block B, and why does it have that value?

2F, because the mass of block B is twice that of block A and the blocks have the same acceleration during the collision

F/2, because the mass of block B is twice that of block A and the blocks have the same acceleration during the collision

F, because the blocks have the same speed immediately before the collision

F, because the net force is equal to the mutual contact force between the blocks

45.

The magnitude of the gravitational field on the surface of a particular planet is 2g. The planet's mass is half the mass of Earth. What is the planet's radius in terms of the radius $R_E$ of Earth?

$\frac{R_E}{4}$

$\frac{R_E}{2}$

$\frac{R_E}{\sqrt[]{2}}$

$2R_E$

46.

A 0.5kg sphere traveling at velocity v1 collides with another 0.5kg sphere at rest. After the collision, the first sphere comes to rest and the other sphere travels at velocity v2. Which of the spheres in the image experiences the greater change in speed?

Black

White

Same

Not Enough Info

47.

How much momentum is lost in an inelastic collision?

Momentum is conserved in all collisions

All the momentum is lost

Half of the momentum is lost

On fourth of the momentum is always lost

48.

An open box and its contents have a combined mass of 5.0 kg. A horizontal force of 15 N is required to push the box at a constant speed of 1.5 m/s across a level surface. How long was the force applied for?

0.25 s

0.33 s

0.5 s

1 s

49.

Which situation will produce the greatest change of momentum for a 1.0 kg cart?

accelerating it from rest to 3 m/s

accelerating it from 2 m/s to 4 m/s

applying a net force of 5 N for 2 s

applying a net force of 10 N for 0.5 s

50.

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?

Both the potential energy and kinetic energy decrease

The potential energy decreases while the kinetic energy increases

The kinetic energy decreases while the potential energy increases

Bothe the potential energy and kinetic energy increase

51.

What force should be applied to compress a spring by 0.5m if its spring constant is k = 1500 N/m?

1880 N

750 N

1500 N

3000 N

52.

A block of wood with mass 1kg is clamped onto a wall with a force of 10N to the right. What is the minimum vertical force needed to keep the block from sliding down? $\mu_s=0.15$

11.5 N

1.5 N

10.0 N

8.5 N

53.

A block with mass m is hung from a spring with negligible mass and set into vertical oscillation. The maximum distance the spring can stretch is x. A spring is considered to be at equilibrium when there is no net force. At equilibrium, what must be true about the energy of the system involving the mass, spring, and the Earth?

Has only kinetic energy

Has kinetic and gravitational potential energy

Has kinetic, spring potential, and gravitational potential energy

Has only gravitational potential energy

54.

Has only kinetic energy

Has kinetic and gravitational potential energy

Has kinetic, spring potential, and gravitational potential energy

Has only gravitational potential energy

55.

The restoration force of a spring oscillator is proportional to __

x^2

square root of x

No relation to displacement (x)

56.

1 pendulum and 1 spring oscillator have the same period. If both masses are doubled, the new period of the pendulum is ___ the new period of the spring system.

Less than

Greater than

Equal to

Depends on amplitude

57.

An object undergoes periodic motion. Its position vs time data is shown below. Where is the equilibrium point on the graph?

15 m

0.06 m

4 m

2 m

58.

A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?

The larger person moving further away from the center.

Moving the smaller person closer to the center.

Moving the smaller person further from the center.

Making the larger person do nothing.

59.

A centrifuge is used in medical laboratories. It has a rotor that rotates at an angular speed of X rpm in the positive direction when switched on. When switched off, it completes Y revolutions before coming to rest.

A. Derive an expression for the angular acceleration (α) of the centrifuge in terms of X, Y, and π.

B. Derive an expression for the time (t) it takes for the centrifuge to come to a stop in terms of X, α, and π.

The machine applies an average frictional torque of τ to stop the rotor in t seconds when it is switched off.

C. An engineer uses a computer model to graph the frictional torque applied to the rotor with respect to time over an interval of t seconds. What does the area under the plotted curve represent?

D. Consider mass, radius, and angular speed of the rotor. For each of these quantities, determine if changing it has an effect on τ. If it does, how must the quantity change in order to reduce τ? Substantiate all your reasoning.

4 lines

60.

A projectile launched from a cliff at time t = 0 s follows the path indicated by the dashed line in the above figure. The axes indicate the positive horizontal and vertical directions. Which of the following graphs could represent the projectile’s motion?

61.

A box of mass $m$ slides up a ramp with initial velocity $+v_0$ . The kinetic friction force on the box has magnitude $f$ . Which of the following is a correct equation that could be used to determine the acceleration $a$ of the box?

$-f=ma$

$mg\sin\theta-f=ma$

$f-mg\sin\theta=ma$

$-f-mg\sin\theta=ma$

62.

Each of the figures above shows a tractor attached to an object. The tractor exerts the same constant force F on each object in every case. Which of the following is a true statement about an object and the relative magnitude of the force exerted by the object on the tractor?

The magnitude of the force exerted by the truck on the tractor is greatest, because the resulting motion is in the direction opposite the tractor’s pull.

The magnitude of the force exerted by the boulder on the tractor is least, because no motion results.

The magnitude of the force exerted by the wagon on the tractor is least, because the resulting motion is in the direction of the tractor’s pull.

The magnitude of the force exerted by each object on the tractor is equal, because the tractor exerts an equal force on each object.

63.

An astronaut with mass $M_A$ is within a satellite that orbits Earth at a height $H$ above its surface. Earth has a mass $M_E$ and radius $R_E$ . Which of the following is a correct expression for the gravitational force exerted on the astronaut by Earth?

$F_g=G\ \frac{M_EM_A}{H^2}$

$F_g=G\ \frac{M_EM_A}{R_E^2}$

$F_g=G\ \frac{M_EM_A}{\left(R_E+H\right)^2}$

$F_g\ =\ 0$

64.

A 50 kg athlete running at speed v grabs a light rope that hangs from a 10-meter-high platform and swings to a maximum of 1.8 m above the ground. Later, a 100 kg athlete, running at the same speed, grabs a similar rope hanging from a 5-meter-high platform. What is the maximum height to which the 100 kg athlete swings?

0.9 m

1.8 m

2.5 m

3.6 m

65.

A sphere of mass m₁, which is attached to a spring, is displaced downward from its equilibrium position as shown above left and released from rest. A sphere of mass m₂, which is suspended from a string of length l is displaced to the right as shown above right and released from rest so that it swings as a simple pendulum with small amplitude. Assume that both spheres undergo simple harmonic motion. Which of the following is true for both spheres?

The maximum kinetic energy is attained as the sphere passes through its equilibrium position.

The maximum kinetic energy is attained as the sphere reaches its point of release.

The minimum gravitational potential energy is attained as the sphere passes through its equilibrium position.

The maximum gravitational potential energy is attained when the sphere reaches its point of release.

66.

A horizontal disk is free to rotate about an axle at its center. The labeled arrows in the figure represent forces of equal magnitude that are exerted on the edge of the disk in the directions shown. Which of the following correctly ranks the magnitude $\tau$ of the torque about the axle exerted by each force?

$\tau_A=\tau_B=\tau_C=\tau_D$

$\tau_A>\tau_D>\left(\tau_B=\tau_C\right)$

$\left(\tau_A=\tau_B=\tau_D\right)>\tau_C$

$\left(\tau_B=\tau_C\right)>\tau_D>\tau_A$

67.

The diagram above shows a top view of a child of mass M on a circular platform of mass 5M that is rotating counterclockwise. Assume the platform rotates without friction. Which of the following describes an action by the child that will result in an increase in the total angular momentum of the child-platform system?

The child moves toward the center of the platform.

The child moves away from the center of the platform.

The child moves along a circle concentric with the platform (dashed line shown) opposite the direction of the platform’s rotation.

None of the actions described will change the total angular momentum of the child-platform system.

68.

Two solid spheres of radius R experience a gravitational force F₁. If two larger spheres of radius 3R made of the same material, what is the magnitude of the gravitational force they would exert on each other?

F₁

3F₁

9F₁

81F₁

69.

A car takes 4 s to come to rest while traveling 20 m at constant acceleration. Can the speed of the car immediately before the brakes were applied be determined without first determining the car's acceleration?

Yes, by dividing the distance (20 m) by the time (4s).

Yes, by determining the average speed while braking and doubling it.

No, because the acceleration is need to use standard kinematics equations.

No, because the fundamental relationship that defines velocity contains acceleration.

70.

While traveling in an elliptical orbit around the Sun, Mars gains speed when it is closest to the Sun. Which of the following best explains this phenomenon?

As Mars gets closer to the Sun, the Mars-Sun system loses potential energy and gains kinetic energy.

A component of the gravitational force is perpendicular to the direction of motion and causes a gain in speed.

Torque exerted on Mars by the Sun during this segment increases the Mars-Sun system's angular momentum.

The centripetal force exerted on Mars is greater than the gravitational force during this segment of the orbit.

71.

A marble moves across the floor for a marble moving in one dimension. Which describes the motion of the marble?

Rolling along the floor and bouncing off a wall.

Rolling down one side of a bowl and then rolling up the other side.

Rolling up a ramp and then rolling back down.

Falling and then bouncing elastically off a hard floor.

72.

A race car goes around a flat, unbanked circular track and gradually increases speed as it completes one full trip around the track. Which of the following can explain why the car gains speed?

Energy stored in the fuel is converted to mechanical energy.

A component of the frictional force exerted by the ground on the tires is directed toward the center of the circle.

A component of the frictional force exerted by the ground on the tires is in the direction of motion.

The car's velocity and acceleration are perpendicular.

73.

A child of mass M is on a platform of mass 2M that is rotating, frictionlessly, counterclockwise. Which describes an action that will increase the angular speed of the platform-child system and gives the correct reason why?

The child walks inward, increasing the total angular momentum.

The child walks inward, decreasing the rotational inertia.

The child walks outward, increasing the total angular momentum.

The child walks outward, decreasing the rotational inertia.

74.

The figure shows the forces on a block sliding on a surface. The coefficient of the block and surface is 0.20. The acceleration of the block is most nearly

1.0 m/s² right

1.0 m/s² left

2.0 m/s² right

2.0 m/s² left

75.

Students are asked to use the set up shown to determine the mass of block B. They plan to measure the time it takes A to reach the floor. Assuming a light string and a light pulley, what other measurements must they make to determine B's mass?

Only the mass of A

Only the distance A falls to reach the floor

Only the mass of A and the distance it falls to reach the floor

The mass of A, the distance A falls, and the radius of the pulley

76.

A student finds a standing wave with one antinode is formed with a frequency f_o. If the length of string is halved, at what frequency will a standing wave with one antinode now be formed on the string?

f_o/2

f_o

2f_o

There is no frequency at which the standing wave will be formed

77.

$V=\pi r^2h$ solve for $\pi$

$\pi=Vr^2h$

$\pi=\frac{h}{Vr^2}$

$\pi=\frac{r^2}{Vh}$

$\pi=\frac{V}{r^2h}$

78.

For every action, thereʼs an equal and opposite reaction. *Action-Reaction*

Newton's First Law

Newton's Second Law

Newton's Third Law

force

79.

According to Newton’s second law of motion, if force remains the same but mass increases, then acceleration will

increase

decreases

remain constant

80.

Definition of velocity

V=t*Δx

V=t^2+Δx

V=Δx-t

V=Δx/t

81.

Forces acting on a person leaning on a wall

gravity only

normal only

push and gravity

normal and gravity

82.

What is Newton's second law?

∑F=m*a

∑F=m/a

m*a=a*m

F₁=g*m*a

83.

What is Power?

P=x*t/m

P=t/m

P=t/E

P=E/t

84.

What is Impulse?

J=F*t

J=Δp

a & b

none of the above

85.

Five darts strike near the center of a target. The dart thrower is

accurate

precise

both accurate and precise

neither accurate nor precise

86.

The greek letter Δ indicates a(n):

difference or change

sum or total

direct proportion

inverse proportion

87.

Which of the following is not a vector quantity?

acceleration

displacement

velocity

speed

88.

If I throw a crayon straight up at 12 m/s, how fast is its velocity when I catch it at the same height?

-6 m/s

-12 m/s

-18 m/s

-24 m/s

89.

What is the horizontal acceleration of a projectile?

0 m/s²

-9.8 m/s²

0 m/s

-9.8 m/s

90.

What is the vertical acceleration of a projectile?

0 m/s²

-9.8 m/s²

0 m/s

-9.8 m/s

91.

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

14.3 m

30.55 m

65 m

43.55 m

92.

Two stones, A and B, are thrown horizontally from the top of a cliff. Stone A has an initial speed of 15 meters per second and stone B has an initial speed of 30. meters per second. Compared to the time it takes stone A to reach the ground, the time it takes stone B to reach the ground is

the same.

twice as great.

half as great.

four times as great.

93.

What is a force that works AGAINST MOTION?

Force

Motion

Gravity

Friction

94.

What is the net force?

400 N Up

400 N Down

- 400 N Down

800 N Down

95.

How many significant figures does the following number have: 0.998005

96.

A soccer ball is kicked with a 36 degree angle and a velocity of 23 m/s. Find the horizontal component of the balls velocity.

13.5 m/s

14.1 m/s

18.6 m/s

33.1 m/s

97.

Find the magnitude of the resultant vector.

17 m

149 m

3 m

12.2 m

98.

A projectile is launched and reaches its peak in 1.2 seconds. What was the initial vertical velocity of the projectile?

8.13 m/s

9.48 m/s

10.75 m/s

11.76 m/s

99.

What is the net force?

5000 N right

4000 N right

40 N left

4000 N left

100.

A box is moving to the left up a ramp. Which way is the force of friction pointing?

down the ramp to the right

up the ramp to the left

there is no friction

straight up

101.

What is the acceleration of an object traveling at a constant velocity?

10 m/s²

0 m/s²

250 m/s²

20 m/s²

102.

Assuming both objects are at rest, which object is more massive? M1 or M2?

M1 is more massive

M2 is more massive

both M1 and M2 are the same mass

103.

Which of the following is the best expression for the Normal Force?

F_N = mg cos(ϴ)

F_N = mg sin(ϴ)

F_N = mg sin(180-ϴ)

F_N = mg cos(90-ϴ)

104.

What is the person doing from 5 seconds to 10 seconds?

Walking

Running

Standing Still

Walking Fast

105.

A force exerted over a distance to move an object is ______________________.

power

work

momentum

Watt

106.

A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?

0 kgm/s

30 kgm/s

50 kgm/s

10 kgm/s

107.

If 2 objects collide and stick together, what will happen to their velocities?

velocities will increase

velocities will decrease

velocities will stay the same

none of the above

108.

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

0.1 kg-m/s

1 kg-m/s

10 kg-m/s

100 kg-m/s

109.

When the speed of an object is doubled, its momentum

remains unchanged in accord with the conservation of momentum.

doubles

quadruples

decreases

110.

The slope of a velocity-time graph is equal to...

displacement

change in velocity

acceleration

net force

111.

A 2 kg blue cart is moving with a velocity of +3 m/s. It collides to a 4 kg red cart which is initially at rest. The carts stick together after the collision. What is the final velocity of the blue cart?

-2 m/s

-1 m/s

+1 m/s

+2 m/s

112.

A toy car drives around a circular track at a constant speed of 2 m/s. The radius of the track is 8 m. What is the magnitude of the car's acceleration?

Zero

0.25 m/s/s

0.50 m/s/s

2.0 m/s/s

113.

Consider a ball thrown up from the surface of the earth into the air at an angle of 30° above the horizontal. Air friction is negligible. Just after the ball is released, its acceleration is:

0 m/s²

Upwards at 9.8 m/s²

Downwards at 9.8 m/s²

Upwards at 4.9 m/s²

None of these

114.

At time t = 0, car X traveling with speed v₀ passes car Y which is just starting to move. Both cars then travel on two parallel lanes of the same straight road. The graphs of speed v versus time t for both cars are shown above. Which of the following is true at time t = 20 seconds?

Car X is accelerating faster than car Y.

Car Y is passing car X.

Car Y is in front of car X.

Car Y is behind car X

115.

A ball is tossed straight up and later returns to the point from which it was launched. If the ball is subject to air resistance as well as gravity, which of the following statements is correct?

The speed at which the ball returns to the point of launch is less than its speed when it was initially launched.

The net work done by air resistance on the ball during its flight is zero.

The time for the ball to fall is the same as the time for the ball to rise.

The force of air resistance is directed down-ward both when the ball is rising and when it is falling.

The net work done by gravity on the ball during its flight is greater than zero.

116.

A spring is compressed by a force F against a wall as shown. Which of the following describes the sign of work done by the spring as it is being compressed?

The spring does positive work since it is gaining potential energy.

The spring does zero work since all the work is done by force F.

The spring does negative work since it applies a force against the direction of its compressing motion.

The spring works part-time at Chik Fil-A.

117.

In which of the following situations is kinetic energy decreasing?

A lit tinsel llama is dropped from a building.

A satellite is moving in a circular orbit around the moon.

A baseball is headed upward after being thrown up in the air.

An elevator is moving upward at a constant velocity.

118.

A baguette is dropped off the top of the Eiffel Tower. What is true concerning of the mechanical energy of the ball as it falls?

The potential energy of the baguette is conserved as it falls.

The sum of the kinetic and potential energies of the baguette is a constant.

The kinetic energy of the baguette is conserved as it falls.

A) The total energy of the object increases as it falls since it gains speed.

119.

Bill and Ted both push a crate of mass m crate across a floor with friction at constant speed. Bill pushes the crate d meters in 100 seconds. Ted takes 200 seconds to push the crate the same distance. Which of the following is true?

More power is developed when Ted pushes the crate.

More power is developed when Bill pushes the crate.

An equal, non-zero amount of power is developed in both cases.

Power is not developed in either case since the crate travels at constant velocity in both cases

120.

A car of mass m is traveling at a speed of when the driver applies the brakes. The car moves a distance of d before it stops completely. What is the magnitude of the braking force required?

$\frac{2d}{v^2}$

$\frac{mv^2}{2d}$

$\frac{2v^2}{d}$

$\frac{mv}{d}$

121.

A penguin of mass M is lifted upwards a vertical distance of H at a constant speed of v. Which of the following gives a correct expression for the power developed by the penguin as it is raised upward at constant speed?

$Mgv$

$\frac{mg}{v}$

$\frac{mgh}{v}$

$mgh$

122.

The system shown consists of two objects of unequal masses, M₁ and M₂, and pulley with negligible mass and friction. Which of the following is true about the changes in the gravitational potential energy and kinetic energy of the system soon after the objects are released from rest?

$\Delta U\ =\ 0\ and\ \Delta K>0$

$\Delta U>0\ and\ \Delta K>0$

$\Delta U<0\ and\ \Delta K>0$

$\Delta U=0\ and\ \Delta K=0$

123.

Jared holds a book still two feet above his desk. He then lowers the book at a constant speed and places it on the desk. Which of the following describes the change in total mechanical-energy of the book?

The total mechanical energy is unchanged since there is no net work done as the book is lowered.

The total mechanical energy decreases because Jared does positive work on the book.

The total mechanical energy is unchanged because no work is done on the book while it is lowered.

The total mechanical energy decreases, because Jared does negative work on the book.

124.

The units for acceleration are

m/s

m/s/s

m/s/s/s

none

125.

The units for force are

N*m

126.

what are the units for momentum?

kg* m/s

kg*m/s/s

127.

the units for energy and work are

m/s

m/s/s

128.

which of the following would be the units for the speed of a sound wave?

m/Hz

m/s

m/s/s

m²/s

129.

the velocity of an object is 12 m/s. what will the displacement be in 2 seconds?

12 m

24 m

36 m

no idea

130.

Two pendulums are in simple harmonic motion. Pendulum A is longer than pendulum B. Pendulum A has a larger mass than B. The period of pendulum A is

longer than pendulum B

shorter than pendulum B

the same as pendulum B

not enough information

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AP Physics 1 review

Total questions: 130

Worksheet time: 2hrs 57mins

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