AP Physics Chapter 5 Quiz Multiple Choice
1. Which of the following is true of inertia?
(A) I only
(B) III only
(C) I and III
(D) II and III
(E) II III and IV
I.
II.
III.
IV.
Name: _________________________
It is measured in Newtons.
It depends on the weight of the object.
It depends on the mass of an object.
It depends on the speed of an object.
2. When a bug splats onto your car windshield, the force on the bug is:
(A) Less than the force on the windshield.
(B) Greater than the force on the windshield.
(C) Equal in amount but opposite in direction.
(D) There is no way to tell without the mass of the bug.
3. When a bug splats onto your car windshield, the bug has a greater acceleration than the car, because:
(A) The force on the bug is greater.
(B) The mass of the bug is less.
(C) Both are true.
(D) Neither is true.
4. A bowling ball and a 1 inch steel ball bearing are dropped from a window. They both have the same
acceleration for the first second of the fall because:
(A) They have the same inertia.
(B) They have equal forces on them.
(C) The forces are balanced.
(D) None of these is correct.
AP Physics Chapter 5 Quiz Multiple Choice
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5. Although he’s been hitting the gym, on Earth DP can barely lift 150 kg. How much can DP lift on
MRPATALAND where the acceleration due to gravity is only 2.5 m/s2?
(A) 37.5 kg
(B) 150 kg
(C) 600 kg
(D) 1500 kg
6. How would DP feel on MRPATA land?
(A) Heavier.
(B) The same.
(C) Lighter.
(D) There is no way to tell without knowing his mass.
7. A box is attached to a mass by a string over a pulley. If given a slight
push and then released the box moves across the surface at a constant
speed. What is the value of the frictional force between the box and the
surface?
(A) 0.5 N
(B) 1.5 N
(C) 5.0 N
(D) 15 N
(E) 20 N
v is constant
1.5 kg
0.5 kg
8. A block of mass m is accelerated across a rough surface by a force of
magnitude F that is exerted at an angle  with the horizontal, as shown
above. The frictional force on the block exerted by the surface has
magnitude f.
What is the acceleration of the block?
(A) F/m
(B) Fcos /m
(C) (F-f)/m
(D) (Fcos-f)/m
(E) (Fsin-mg)/m
F

f
m
AP Physics Chapter 5 Quiz Multiple Choice
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9. A block of mass 5 kilograms lies at rest on an inclined plane, as shown at the
right. The horizontal and vertical supports for the plane have lengths of 4 meters
and 3 meters, respectively. The magnitude of the force F necessary to pull the
block up the plane with constant speed is most nearly:
(A) 30 N
(B) 40 N
(C) 49 N
(D) 50 N
(E) 58 N
F
5 kg
3m
θ
4m
10. Which of the following is true of the forces on the block?
(A) The weight is equal to the normal force.
(B) The normal force is equal to 50 cos θ.
(C) The y-component of the weight and the normal force are 3rd Law Force pairs.
(D) A & B
(E) B & C
(F) A & C
(G) A B & C
11. A satellite is in orbit around the Earth. To keep it in orbit the Earth exerts a force with magnitude F1 on the
satellite. If F2 is the magnitude of the force exerted by the satellite on the Earth, then which of the following
is true?
(A) F1 is much greater than F2.
(B) F1 is slightly greater than F2.
(C) F1 is equal to F2.
(D) F2 is slightly greater than F1.
(E) F2 is much greater than F1.
(F) It’s a trick F2 = 0 because the satellite doesn’t exert any force on the Earth
12. Two 0.60-kilogram objects are connected by a thread that passes over
a light, frictionless pulley, as shown above. The objects are initially
held at rest. If a third object with a mass of 0.30 kilogram is added on
top of one of the 0.60-kilogram objects as shown and the objects are
released, the magnitude of the acceleration of the 0.30-kilogram object
is most nearly:
(A) 10.0 m/s2
(B) 6.0 m/s2
(C) 3.0 m/s2
(D) 2.0 m/s2
(E) 1.0 m/s2
0.30 kg
0.60 kg
0.60 kg
AP Physics Chapter 5 Quiz Multiple Choice
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13. DP (mass 70 kg), riding in an elevator feels “normal” when (it says ‘feels’ normal not ‘is’ normal!):
(A) Not moving.
(B) Moving up at a constant speed.
(C) Moving down at a constant speed.
(D) A & B only are true.
(E) B & C only are true.
(F) All of the above are true.
14. During part of his trip, DP feels like his weight is 900 N. The floor is pushing up with:
(A) 0 N
(B) 200 N
(C) 700 N
(D) 900 N
(E) 1600 N
15. The value of the net force in the previous problem is then:
(A) 0 N
(B) 200 N
(C) 700 N
(D) 900 N
(E) 1600 N
16. A descending elevator of mass 1,000 kg is uniformly decelerated to rest
over a distance of 8 m by a cable in which the tension is 11,000 N. The
speed v0 of the elevator at the beginning of the 8 m descent is most
nearly:
(A) 4 m/s
(B) 10 m/s
(C) 13 m/s
(D) 16 m/s
(E) 21 m/s
Cable
v
1000 kg
Elevator
v = v0
8m
v=0
AP Physics Chapter 5 Quiz Multiple Choice
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17. A mass m moves on a curved path from point X to point Y. Which of the following diagrams indicates a
possible combination of the net force F on the mass, and the velocity v and acceleration a of the mass at the
location shown?
Y
Y
Y
F
v
F
a
m
m
m
a
X
X
(A)
v
X
(B)
Y
v
v
X
a
(D)
(C)
Y
F
m
F
a
v
m
X
a
F
(E)
18. Two blocks are pushed along a horizontal frictionless surface by
a force of 20 Newtons to the right, as shown above. The force
that the 2-kilogram block exerts on the 3-kilogram block is:
(A) 8 Newtons to the left.
(B) 8 Newtons to the right.
(C) 10 Newtons to the left.
(D) 12 Newtons to the right.
(E) 20 Newtons to the left.
20 N
3 kg
2 kg
AP Physics Chapter 5 Quiz Multiple Choice
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19. When the frictionless system shown above is accelerated by an
applied force of magnitude F, the tension in the string between the
blocks is:
(A) 2 F
(B) F
(C) (2/3)F
(D) 0.5F
(E) (1/3)F
2 kg
20. The parabola above is a graph of speed v as a function of time t for an object.
Which of the following graphs best represents the magnitude F of the net
force exerted on the object as a function of time t?
v
v  t2
F
F
F
1 kg
t
(A)
t
F
(B)
t
F
(C)
t
F
(D)
t
(E)
t
AP Physics Chapter 5 Quiz Multiple Choice
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A block of mass M1 on a horizontal table is connected to a hanging block of mass M2 by a string that passes
over a pulley, as shown. The acceleration of the blocks is 0.6g. Assume that the friction and the mass of the
string are negligible.
21. The tension in the string is?
(A) Zero
(B) 0.4 M2g
(C) 0.6 M2g
(D) M2g
(E) 1.6 M2g
M1
M2
22. The ratio of masses M2 / M1 is
(A) 0.67
(B) 1.0
(C) 1.4
(D) 1.5
(E) 1.6
23. A 100-newton weight is suspended by two cords as shown in the
figure above. The tension in the slanted cord is:
(A) 50 N
(B) 100 N
(C) 150 N
(D) 200 N
(E) 250 N
30
100 N
AP Physics Chapter 5 Quiz Multiple Choice
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24. An object of mass 100 kg is initially at rest on a horizontal frictionless surface. At time t = 0 a horizontal
force of 10 N is applied to the object for 1 second and then removed. Which of the following is true of the
object at time t = 2 seconds if it is still on the surface?
(A) It is at the same position it had at t = 0, since a force of 10 N is not enough to move such a massive
object.
(B) It is moving with constant nonzero acceleration.
(C) It is moving with decreasing acceleration.
(D) It is moving at a constant speed.
(E) It has come to rest some distance away from the position is had at t = 0.
25. Several forces act on an object, but the object is in
equilibrium. Which of the following statements about
the object must be true?
(A) I and II
(B) I and III
(C) I and IV
(D) II and III
(E) II and IV
I.
II.
III.
IV.
It has zero acceleration
The net force acting on it is zero.
It is at rest.
It is moving with constant velocity.