Cracking The AP Physics 1 Exam

Princeton Review

Chapter 4

Practice Test 4

Educators

Chapter Questions

Section 1 - Problem 1

What is the distance traveled by the explorer?
(A) 167.2 $\mathrm{m}$
(B) 169 $\mathrm{m}$
(C) 170 $\mathrm{m}$
(D) 198.2 $\mathrm{m}$

Salamat A.

Salamat A.

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Section 1 - Problem 2

What is the displacement of the explorer?
(A) 130 $\mathrm{m}$
(B) 169 $\mathrm{m}$
(C) 170 $\mathrm{m}$
(D) 215 $\mathrm{m}$

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Section 1 - Problem 3

The explorer took $60 \mathrm{s}, 130 \mathrm{s},$ and 70 $\mathrm{s}$ to travel the $30 \mathrm{m}, 2 \mathrm{o} \sqrt{2} \mathrm{m},$ and 140 $\mathrm{m}$ north distances, respectively. What is the average velocity of the explorer over the total distance traveled?
(A) 0.50 $\mathrm{m} / \mathrm{s}$
(B) 33.3 $\mathrm{m} / \mathrm{min}$
(C) 0.76 $\mathrm{m} / \mathrm{s}$
(D) 100 $\mathrm{m} / \mathrm{min}$

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Section 1 - Problem 4

The graph above is the position-versus-time graph of an object. Which of the following is the velocity-versus-time graph of the object?

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Section 1 - Problem 5

In which section of the following velocity-time graph is the object
slowing down and moving in the negative direction?
(A) Section 1
(B) Section 2
(C) Section 3
(D) Section 4

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Section 1 - Problem 6

Which of the following is true statement regarding the motion of
projectiles?
(A) All projectiles have zero velocity at the apex of the trajectory.
(B) The velocity of projectiles is smallest at the apex of the trajectory.
(C) The acceleration of projectiles is greatest at the apex of the
(D) Projectiles have maximum kinetic energy at the apex of the
trajectory.

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Section 1 - Problem 7

A cannonball is fired with an initial velocity of 20 $\mathrm{m} / \mathrm{s}$ and a launch angle of $45^{\circ}$ at a wall 30 $\mathrm{m}$ away. If the cannonball just barely clears the wall, what is the maximum height of the wall?
(A) 5.92 $\mathrm{m}$
(B) 6.34 $\mathrm{m}$
(C) 7.51 $\mathrm{m}$
(D) 8.32 $\mathrm{m}$

Salamat A.

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Section 1 - Problem 8

A car initially at rest accelerates linearly at a constant rate for 5 . If
the final speed of the car is 15 $\mathrm{m} / \mathrm{s}$ , what was the acceleration of the car?
(A) 50 $\mathrm{m}$
(B) 100 $\mathrm{m}$
(C) 150 $\mathrm{m}$
(D) 200 $\mathrm{m}$

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Section 1 - Problem 9

A rocket is launched into the air. A few moments after lifterf, the
rocket is 40 $\mathrm{m}$ above the ground. After another 5 $\mathrm{s}$ , the rocket is now aoo $\mathrm{m}$ off the ground. What is the average velocity of the rocket during the 5 s part of the flight?
(A) 16 $\mathrm{m} / \mathrm{s}$
(B) 32 $\mathrm{m} / \mathrm{s}$
(C) 48 $\mathrm{m} / \mathrm{s}$
(D) 64 $\mathrm{m} / \mathrm{s}$

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Section 1 - Problem 10

A student presses a 0.5 $\mathrm{kg}$ book against the wall. If the $\mu_{\mathrm{s}}$ between the book and the wall is $0.2,$ what force must the student apply to hold the book in place?
(A) $\mathbf{O} \mathbf{N}$
(B) 15 $\mathbf{N}$
(C) 25 $\mathbf{N}$
(D) 35 $\mathbf{N}$

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Section 1 - Problem 11

A box with a mass of 10 $\mathrm{kg}$ is placed on an inclined plane that makes a $60^{\circ}$ angle with the horizontal. The coefficient of static fraction $\left(\mu_{\mathrm{s}}\right)$ between the box and the inclined plane is $0.2 .$ What force must be
(A) 32.7 $\mathrm{N}$
(B) 48.3 $\mathrm{N}$
(C) 56.2 $\mathrm{N}$
(D) 76.6 $\mathrm{N}$
applied on the box in order to prevent the box from sliding down the
inclined plane?

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Section 1 - Problem 12

A 2000 kg car has a head-on collision with a 1000 kg car. How does
the impact force force on the heavier car compare with that of the
smaller car?
(A) The heavier car experiences a greater impact force.
(B) The smaller car experiences a greater impact force.
(C) Both vehicles experience an impact force with the same
magnitude.
(D) Cannot be determined

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Section 1 - Problem 13

Two students push two different boxes across a frictionless floor. Both students exert a horizontal force of 50 $\mathrm{N}$ . If the first box has mass $m_{1}=$
10 $\mathrm{kg}$ and the second box has mass $m_{2}=40 \mathrm{kg}$ , what is the value of
$a_{1} / a_{2} ?$
(A) 1$/ 4$
(B) 1$/ 2$
(C) 2
(D) 4

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Section 1 - Problem 14

A 4 kg box is accelerated upwards by a string with a breaking strength
of 80 $\mathrm{N}$ . What is the maximum upward acceleration that can be applied on the box without breaking the string?
(A) 2.5 $\mathrm{m} / \mathrm{s}^{2}$
(B) 5.0 $\mathrm{m} / \mathrm{s}^{2}$
(C) 7.5 $\mathrm{m} / \mathrm{s}^{2}$
(D) 10 $\mathrm{m} / \mathrm{s}^{2}$

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Section 1 - Problem 15

A worker moves a 30 $\mathrm{kg}$ box by pulling on it with a rope that makes a $60^{\circ}$ angle with the horizontal. If the worker applies a force of 40 $\mathrm{N}$ and
pulls the box over a distance of $20 \mathrm{m},$ how much work did the worker
(A) 100 $\mathrm{J}$
(B) 200 $\mathrm{J}$
(C) 400 $\mathrm{J}$
(D) 800 $\mathrm{J}$

Salamat A.

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Section 1 - Problem 16

A 2 kg rock is dropped off a cliff with a height of 20 $\mathrm{m}$ . What the speed
of the rock at the bottom of the hill?
(A) 10 $\mathrm{m} / \mathrm{s}$
(B) 14 $\mathrm{m} / \mathrm{s}$
(C) 20 $\mathrm{m} / \mathrm{s}$
(D) 40 $\mathrm{m} / \mathrm{s}$

Salamat A.

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Section 1 - Problem 17

How much work is done by a pitcher in throwing a 0.2 kg ball at a
speed of 30 $\mathrm{m} / \mathrm{s}$ ?
(A) 3 $\mathrm{J}$
(B) 9 $\mathrm{J}$
(C) 30 $\mathrm{J}$
(D) 90 $\mathrm{J}$

Salamat A.

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Section 1 - Problem 18

A 10 $\mathrm{kg}$ block is placed at the top of an inclined plane with an angle of incline of $30^{\circ}$ and $\mu_{\mathrm{k}}=0.1 .$ Ithe height of the inclined plane is $2 \mathrm{m},$ what is the kinetic energy of the block when it is halfway down the
incline?
(A) 64 $\mathrm{J}$
(B) 72 $\mathrm{J}$
(C) 91 $\mathrm{J}$
(D) 100 $\mathrm{J}$

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Section 1 - Problem 19

A car's engine must exert a force of $2,000 \mathrm{N}$ to maintain a speed of 30 $\mathrm{m} / \mathrm{s}$ up an incline. What is the power provided by the engine during this motion?
(A) 20 $\mathrm{N}$
(B) 40 $\mathrm{N}$
(C) 80 $\mathrm{N}$
(D) 160 $\mathrm{N}$

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Section 1 - Problem 20

Questions $20-22$ refer to the following scenario:
What is the impulse during the collision?
(A) 10 $\mathrm{N} \cdot \mathrm{s}$
(B) 2 $\mathrm{O} \mathrm{N} \cdot \mathrm{s}$
(C) 3 $\mathrm{O} \mathrm{N} \cdot \mathrm{s}$
(D) 6 $\mathrm{O} \mathrm{N} \cdot \mathrm{s}$

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Section 1 - Problem 21

Questions $20-22$ refer to the following scenario:
If the ball is in contact with the wall for 0.002 s, determine the
average force experienced by the ball.
(A) $3,000 \mathrm{N}$
(B) $5,000 \mathrm{N}$
(C) $30,$ ooo $\mathrm{N}$
(D) $50,$ ooo $\mathrm{N}$

Salamat A.

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Section 1 - Problem 22

Questions $20-22$ refer to the following scenario:

How much work did the wall do on the ball?
(A) $-300 \mathrm{J}$
(B) $-400 \mathrm{J}$
(C) $-750 \mathrm{J}$
(D) $-1,000 \mathrm{J}$

Salamat A.

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Section 1 - Problem 23

A student pushes a 6 $\mathrm{kg}$ box up an inclined plane with a height of 10 $\mathrm{m}$ . How much work does gravity do on the box during this process?
(A) $-1,200 \mathrm{J}$
(B) $-600 \mathrm{J}$
(C) 600 $\mathrm{J}$
(D) $1,200 \mathrm{J}$

Salamat A.

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Section 1 - Problem 24

A 2 kg ball traveling to the right at 6 $\mathrm{m} / \mathrm{s}$ collides head on with a 1 $\mathrm{kg}$ ball at rest. After impact, the 2 $\mathrm{kg}$ ball is traveling to the right at 2 $\mathrm{m} / \mathrm{s}$ and the 1 $\mathrm{kg}$ ball is traveling to the right at 8 $\mathrm{m} / \mathrm{s}$ . What type of collision occurred?
(A) Inelastic
(B) Perfectly inelastic
(C) Elastic
(D) Cannot be determined

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Section 1 - Problem 25

A 3 kg mass with a initial velocity of $+3 \mathrm{m} / \mathrm{s}$ has a perfectly inelastic collision with a 2 $\mathrm{kg}$ mass with an initial velocity of $-6 \mathrm{m} / \mathrm{s}$ . What is
the final velocity after impact?
(A) $-1.0 \mathrm{m} / \mathrm{s}$
(B) $-0.6 \mathrm{m} / \mathrm{s}$
(C) o.6 $\mathrm{m} / \mathrm{s}$
(D) 1.0 $\mathrm{m} / \mathrm{s}$

Salamat A.

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