Name: ________________________________________________________ Class Period: __________
Classwork: Summer Assignment for AP Physics 1
Note: This is your first classwork in AP Physics 1. Turn in your answers on the first day of school in August.
You will lose 10 percent of your total score for each day your paper is turned in late. Classworks are worth
50% of your grade in class. DO NOT WRITE ON THIS PACKET. This packet will also be turned in on the first
of school.
Multiple Choice. On the Scantron sheet, bubble the letter that corresponds to the correct answer.
_____1. In an experiment, an object is moved along a straight line with different types of motion. The
graph above shows position versus time for the object during the first three seconds of its motion.
Which one of the following is closest to the average speed of the object during the entire three-second
interval that is shown in the graph?
A. 0.67 m/s
B. 1 m/s
C. 1.33 m/s
D. 2 m/s
_____2. Which of the following vehicles is undergoing acceleration?
A. A car driving straight to the east on a road at a constant speed.
B. A truck rounding a corner at a constant speed.
C. A van slowing down as it approaches a stop sign.
D. More than one of the above vehicles is undergoing an acceleration.
_____3. The graph below shows position as a function of time for an object moving along a straight line.
During which time(s) is the object at rest?
I.
0.5 second
II.
From 1 to 2 seconds
III.
2.5 seconds
A. I only
B. II only
C. III only
D. I and III only
_____4. The graph below shows velocity as a function of time for an object moving along a straight line.
During which time(s) is the object at rest?
I.
0.5 seconds
II.
From 1 to 2 seconds
III.
2.5 seconds
A. I only
B. II only
C. III only
D. I and III only
_____5. A cart that is free to move in one dimension is moving in the positive direction and slowing
down under the influence of a constant backwards pull, until the cart comes to a momentary stop and
reverses direction.
What are the signs of the cart’s velocity and acceleration during the moment it is stopped?
A. velocity: 0 acceleration: +
C. velocity: 0 acceleration: B. velocity: + acceleration: 0
D. velocity: - acceleration: 0
_____6. A rock is thrown upward from the ground, in the absence of air resistance. Which one of the
following diagram shows the correct directions for the velocity (v) and acceleration (a) of the rock when
it is at its highest position?
A.
B.
C.
D.
_____7. A bowling ball and a sheet of paper are dropped at the same time from the same height above
the ground, on Earth in the absence of air resistance. Which one hits the ground first, and why?
A. The bowling ball hits the ground first, because Earth’s gravity pulls with a larger force on the ball.
B. The paper hits the ground first, because Earth’s gravity pulls with a larger force on the paper.
C. Both objects hit the ground at the same time, because when Earth’s gravity pulls with different forces
on the two objects, the resulting acceleration of the objects is the same.
D. Both objects hit the ground at the same time, because Earth’s gravity pulls with equal forces on both
objects.
_____8. A cart is released from rest at the top of a long ramp at time t = 0 seconds, and moves down the
ramp at a constant acceleration rate. At a time of t, the cart has reached a speed of 2 m/s. How fast will
the cart be moving at the time of 3t?
A. 3 m/s
B. 6 m/s
C. 12 m/s
D. 18 m/s
_____9. A cart is released from rest at the top of a long ramp at time t = 0 seconds, and moves down the
ramp at a constant acceleration rate. At a time t, the cart has moved 20 cm from the top of the ramp. How
far will the cart be located from the top of the ramp at the time of 3t?
A. 40 cm
B. 60 cm
C. 120 cm
D. 180 cm
_____10. An object is launched straight upward in the absence of air resistance, and allowed to move until
it lands back at its original height.
If the upward direction is considered to be positive direction, which one of the following is the most
correct graph showing velocity versus time for this object?
A.
B.
C.
D.
_____11. Which one of the following pairs of quantities consists of two quantities that are BOTH vector
measurements?
A. speed, distance
C. velocity, displacement
B. velocity, distance
D. speed, displacement
_____12. Two vectors of magnitude 15 and 9 are added together in various combinations. In which case
does the resultant of two vectors have the least magnitude?
A. The vectors are in the same direction.
B. The vectors are in opposite directions.
C. The vectors are perpendicular.
D. The vectors form an angle between 0 and 90 degrees.
_____13. Which one of the following vector diagrams correctly shows vector R drawn as the resultant
of vector A plus vector B?
A.
B.
C.
D.
_____14. An object is initially moving with a certain speed in the positive x-direction. Later, the object is
moving with the same speed in the negative y-direction.
Which one of the following best indicates the direction of the object’s average acceleration vectors?
A.
B.
C.
D.
_____15. A mouse starts at his mouse-hole, and then scurries through the following three
displacements:
 10 cm north
 40 cm at 30 degrees north of east
 20 cm at 37 degrees east of south
How far north from its mouse-hole is the mouse t the end of those three displacements?
A. 14 cm
B. 18 cm
C. 42 cm
D. 46 cm
_____16. Which one of the following diagrams best represents the path followed by a projectile that has
been launched horizontally from a countertop?
A.
C.
B.
D.
_____17. A golf ball is hit off of the roof of a building, into an open lot next to the building. The ball is hit
so that it launches straight horizontally from the roof, at a launch speed of 25 m/s. If the golf ball lands
on the ground 4 seconds after it was hit, how far away from the building (measured horizontally) does it
land?
A. 6.25 m
C. 180 m
B. 100 m
D. This question cannot be answered without knowing the height of the building.
_____18. A ball is dropped from a certain height, and at that exact same moment a rock is fired
horizontally from the exact same height above ground level. Assuming that air resistance is negligible,
which object will strike the ground first?
A. The ball will hit first.
B. The rock will hit first.
C. They will hit at the same time.
D. The answer to this question depends on precisely how fast the rock is fired.
_____19. A ball is dropped from a certain height, and at that exact same moment a rock is fired
horizontally from the exact same height above ground level. Assuming that air resistance is negligible,
which object will strike the ground at a faster velocity?
A. The ball will hit at a faster velocity.
B. The rock will hit at a faster velocity.
C. They will hit at the same velocity.
D. The answer to this question depends on precisely how fast the rock is fired.
_____20. A basketball is shot upward at an angle, leaving the player’s hands moving at 10 m/s at an
angle of 37 degrees above the horizontal. What is the speed of the basketball when it is at its highest
position?
A. 0 m/s
B. 6 m/s
C. 8 m/s
D. 12 m/s
_____21. A ball is tied to a string and swung in a horizontal circular path at constant speed. The ball’s
path is clockwise when viewed from the perspective shown in the diagram. When the ball is at the
location shown in the diagram, in what direction is the net force acting on the ball pointing?
A.
B.
C.
D.
_____22. A ball is tied to a string and swung in a horizontal circular path at constant speed. The ball’s
path is clockwise when viewed from the perspective show in the diagram. The string breaks at the
moment that the ball is at the location shown. In what direction does the ball move immediately after
the string breaks?
A.
B.
C.
D.
_____23. A 1000 kg car moving at 10 m/s rounds a circular turn at a constant speed. The circular turn
has a radius of 20 meters. What is the magnitude of the car’s centripetal acceleration during its turn?
A. 0.5 m/s2
B. 2 m/s2
C. 5 m/s2
D. 500 m/s2
_____24. A child swings a yo-yo of mass M in vertical circles of radius R, such that the yo-yo moves at a
constant speed V throughout its motion. At a particular moment, the yo-yo is at the lowest position in
its circular path.
Which one of the following is a correct expression of Newton’s second law as applied to the magnitude
of each force acting on the yo-yo at the moment it is at that lowest position?
A. FTension – Fgravity = MV2/R
C. Fcentripetal + FTension – Fgravity = MV2/R
2
B. FTension + Fgravity = MV /R
D. Fcentripetal + FTension + Fgravity = MV2/R
_____25. A car crests the top of a circular hill, maintaining a constant speed at it does so, and lot losing
contact with the road during the process.
How does the normal force that the road exerts on the car compare to the car’s weight during the
moment the car is at the top of the hill?
A. Normal force is greater than weight.
B. Normal force equals weight.
C. Normal force is less than weight.
D. This question cannot be answered without knowing more information.
_____26. 1. Which one of the following is equal to 1 Newton?
A. 1 kgm2/s
B. 1 kgm/s2
C. 1 kg2/s
D. 1 kg2m/s
_____27. The block shown in the diagram has no forces acting on it other than those shown. If the block
is moving to the right at a constant velocity, how do the forces Fleft and Fright compare to each other?
A. Fleft is less than Fright.
B. Fleft is equal to Fright.
C. Fleft is greater than Fright.
D. This question cannot be answered without knowing the exact velocity of the block.
_____28. All of the following situations can be explained using Newton’s 3rd law, except for one of them.
Which situation can NOT be explained using 3rd law ideas?
A. An inflated balloon is not tied, and is let go. It moves forward as it pushes air backward out of the
hole.
B. The gravitational interaction between Earth and the Moon affects both objects, with Earth’s tides
mostly due to the Moon’s gravitational pull.
C. A projectile’s horizontal velocity remains constant, because gravity is a vertical force and no
horizontal force acts on the projectile.
D. A propeller airplane would not work in outer space, because propellers work by pushing air backward
to move the airplane forward.
_____29. A girl holds an orange at rest in her hand. One force in an action/reaction pair is the force of
earth’s gravity pulling down on the orange. What is the other force in the action/reaction pair of forces?
A. The force of the hand pushing up on the orange.
B. The force of the earth pushing up on the girl’s feet.
C. The force of the orange pushing down on the girl’s hand.
D. The force of the orange pulling on the earth.
_____30. A 0.1 kg yo-yo is initially hanging at rest at the end of its string. Then the tension force in the
string is adjusted to 0.6 N pulling upward.
Which one of the following describes how the yo-yo will move once the string’s force is adjusted?
A. The yo-yo will accelerate upward.
B. The yo-yo will accelerate downward.
C. The yo-yo will move upward at a constant velocity.
D. The yo-yo will move downward at a constant velocity.
_____31. Which of the following objects is in translational equilibrium?
I. A box of textbooks at rest on the floor.
II. A softball thrown straight upward, at its maximum height.
III. A car moving along a straight section of highway at a constant speed.
A. I only
B. II only
C. I and III only
D. I, II, and III
_____32. A 4-kg jug of juice is pulled forward across a horizontal breakfast table, by a 10-N forwarddirected force. A frictional force also impedes the jug’s motion.
What is the coefficient of kinetic friction between the table and jug, if the jug moves at a constant speed?
A. 0.25
B. 0.4
C. 0.6
D. 10
_____33. A 0.1-kg yo-yo is hanging from its string, being pulled upward by a 3.0 N tension force in the
string. How quickly is the yo-yo accelerating upward?
A. 2 m/s2
B. 3 m/s2
C. 20 m/s2
D. 30 m/s2
_____34. A 20-kg suitcase is dragged forward across a horizontal floor, by a 50-N force exerted at 53
degrees above the horizontal.
If the floor is frictionless, find the suitcase’s acceleration rate.
A. 0.5 m/s2
B. 1.5 m/s2
C. 2 m/s2
D. 2.5 m/s2
_____35. A box is in the midst of sliding down an incline, under the influence of only the three forces
shown in the diagram.
How does the normal force on the box compare to the box’s weight?
A. Normal force is greater than the weight.
B. Normal force is equal to the weight.
C. Normal force is less than the weight.
D. This question cannot be answered without knowing more about
the box’s motion.
_____36. Two objects are initially exerting a gravitational pull of 12 Newtons on each other. What will
be the new strength of gravitational pull if one object’s mass is tripled, while the objects are also moved
to a location only half as far away from each other?
A. 2 Newtons
B. 8 Newtons
C. 72 Newtons
D. 144 Newtons
_____37. A small asteroid of mass m is in orbit around a planet of mass M and radius R. The asteroid is
orbiting at a height h above the surface of the planet. Which of the following is a correct expression for
the force of gravity that the planet is exerting on the asteroid?
𝐺𝑚𝑀
𝐺𝑚𝑀
𝐺𝑚𝑀
𝐺𝑚𝑀
A. 2
B. 2
C. (𝑅 )2
D. (𝑅− )2
𝑅
ℎ
+ℎ
ℎ
_____38. A certain component of a space probe has a mass of 10 kg on Earth. What would be the weight
of this same component, if weighed on the surface of a planet with 1/5 the mass of Earth and 1/2 the
Earth’s radius?
A. 8 N
B. 10 N
C. 40 N
D. 80 N
_____39. A small asteroid of mass m is in orbit around a planet of mass M and radius R. The asteroid is
orbiting at a height h above the surface of the planet. Which of the following is a correct expression for
the value of the gravitational field strength “g” at the location of the asteroid?
𝐺𝑀
𝐺𝑚𝑀
𝐺𝑚
𝐺𝑀
A. (𝑅 + ℎ)2
B. (𝑅 + ℎ)2
C. (𝑅 + ℎ)2
D. 𝑅 + ℎ
_____40. A small asteroid of mass m is in circular orbit around a planet of mass M and radius R. The
asteroid is orbiting at a height h above the surface of the planet. Which of the following is a correct
expression for the orbital speed of the asteroid?
A. √
𝐺𝑚
(𝑅 + ℎ)
B. √
𝐺𝑀
(𝑅 + ℎ)
𝐺𝑚
(𝑅 + ℎ)2
C. √
C.
𝐺𝑚
(𝑅 + ℎ)2
_____41. The box in the diagram is sliding to the right across a horizontal surface, under the influence of
the forces shown.
Which force (or forces) is doing zero work on the box?
A. Fgravity only
B. Ffriction only
C. Fgravity and Ffriction only
D. Fgravity and Fnormal only
_____42. The box in the diagram is sliding to the right across a horizontal surface, under the influence of
the forces shown.
Which force (or forces) is doing negative work on the box?
A. Fgravity only
B. Ffriction only
C. Fgravity and Ffriction only
D. Fgravity and Fnormal only
_____43. Which one of the following units for measuring energy is not equal to the other three units?
A. Joule
B. kilogrammeter2/second2
C. calorie
D. wattsecond
_____44. A certain motor is able to perform 6000 J of work over the course of 2 minutes. What power is
developed by the motor during this time?
A. 50 W
B. 3000 W
C. 12000 W
D. 720000 W
_____45. A large spring has a force constant of 1000 N/m, and is initially stretched 2 meters beyond its
equilibrium length. By how much does its elastic potential energy change, if it is stretched out from that
initial length to 3 meters beyond its equilibrium length?
A. 500 J
B. 2000 J
C. 2500 J
D. 4500 J
_____46. A box is released from rest to slide all the way down a ramp with friction. Which one of the
following statements most correctly describes energy transformations during this motion?
A. The box’s initial kinetic energy is transformed into potential energy.
B. The box’s initial potential energy and thermal energy are both transformed into kinetic energy.
C. The box’s initial potential energy is transformed into thermal energy and kinetic energy.
D. The box’s initial kinetic energy is transformed into thermal energy and potential energy.
_____47. A certain ball is thrown upward from ground level with 200 J of kinetic energy. At a certain
time during its motion, the ball is at a height where it possesses 80 J of potential energy, relative to
ground level. By this same time, air resistance has converted 30 J of the ball’s mechanical energy into
thermal energy. How much kinetic energy does the ball possess at this time?
A. 90 J
B. 120 J
C. 150 J
D. 250 J
_____48. A very small marble is released from rest on a curved track, from the starting level shown in
the diagram. It moves down the track and over the small “bump” in the track and starts back up the
other side of the track.
Assuming that friction and air resistance are negligible, what is the highest the marble moves up the
other side of the track?
A. above the starting level
C. barely below the starting level
B. exactly to the starting level
D. significantly below the starting level
_____49. A rock of mass m is thrown from the edge of a cliff at a speed v. The cliff is a height h above
the ground below. Which of the following is a correct expression for the energy the rock possesses as it
reaches the ground below?
A. mgh
B. ½ mv2 + mgh
C. ½ mv2
D. ½ mv2 - mgh
_____50. A box is released from rest at the top of a frictionless ramp, with measurements of the ramp
shown in the diagram.
Which one of the following is closest to the box’s speed as it reaches the base of the camp?
A. 3.9 m/s
B. 5.5 m/s
C. 7.7 m/s
D. 10 m/s
_____51. Which of the following units could ever be used to measure the momentum of an object?
I. kgm/s
II. Ns
III. Nm
A. I only
B. I and II only
C. I and III only
D. I, II and III only
_____52. If the only quantity that is known about an object is the impulse acting on it, what other quantity
about the object can always be calculated?
A. mass
B. force
C. change in velocity
D. change in momentum
_____53. In part of an experiment, a certain force acts on an object for 1 second, and the object’s speed
increases by a certain amount v. In the second part of the experiment, the same force acts on the same
object, but for 4 seconds. How much does the object’s speed increase during the second part of the
experiment?
A. v/2
B. v
C. 2v
D. 4v
_____54. Two carts of equal mass, A and B, approach each other, moving in opposite directions at the
same speed. The fronts of the carts have Velcro fabric on them, so the carts will stick together after
collision. What will happen to the carts after they collide?
A. The carts will both stop.
B. The carts will move in the direction cart A was moving before the collision.
C. The carts will move in the direction cart B was moving before the collision.
D. The direction the carts will move depends on the exact values of the cart’ speed before colliding.
_____55. Two carts, A and B, of different masses approach each other moving in opposite directions. Cart
A is more massive than cart B. The fronts of the carts have Velcro fabric on them, so the carts will stick
together after the collision. What will happen to the carts after they collide
A. The carts will both stop.
B. The carts will move in the direction cart A was moving before the collision.
C. The carts will move in the direction cart B was moving before the collision.
D. The direction the carts will move depends on the exact values of the cart’ speed before colliding.
_____56. As shown in the diagram, a small block starts from rest, then slides down a frictionless ramp. It
then slides across a frictionless horizontal surface until it collides with a larger block.
What quantity (or quantities) must definitely be conserved for the two-block system during the collision
between the two block?
A. Momentum only
C. Both momentum and mechanical energy
B. Mechanical energy only
D. Neither momentum nor mechanical energy
_____57. A mother and her small child are on ice skates on frictionless ice, when they push off of one
another. What quantity MUST have equal magnitudes for the mother and child immediately after they
push off?
I. kinetic energy
II. speed
III. momentum
A. I only
B. III only
C. I and III only
D. I, II, and III
_____58. As shown in the diagram, a 2 kg block starts from rest at the top of a 80 cm-tall frictionless ramp.
It then slides across a frictionless horizontal surface until it collides with a 10-kg block. After the collision,
the blocks stick together.
Which one of the following is closest to the speed of the blocks as they move off together?
A. 0.7 m/s
B. 1.6 m/s
C. 2.7 m/s
D. 4 m/s
_____59. A physics teacher writes a problem where a 3-kg block, initially moving to the right at 10 m/s,
collides with a 5-kg block at rest. After the collision the 3-kg block at rest, and the 5-kg block is moving to
the right at 6 m/s. What type of collision does the problem represent?
A. elastic collision
C. perfectly inelastic collision
B. inelastic collision
D. The collision described in the problem could never possibly occur.
_____60. The diagram shows the motion and masses of two carts before a collision in a student
experiment. (Friction can be considered negligible in this experiment.) After the collision, the 3-kg cart is
moving back to the left at 2 m/s.
How much energy is lost during this inelastic collision?
A. 35 J
B. 39 J
C. 57 J
D. 81 J