Name: ________________________ Class: ___________________ Date: __________
ID: A
Physics
1. Work is done when
a. the displacement is not zero.
b. the displacement is zero.
c. the force is zero.
d. the force and displacement are perpendicular.
4.
2. The length of a force vector represents the
a. cause of the force.
b. direction of the force.
c. magnitude of the force.
d. type of force.
3.
5. Which of the following forces arises from direct
physical contact between two objects?
a. gravitational force
b. fundamental force
c. contact force
d. field force
6. Which of the following equations expresses the
work-kinetic energy theorem?
a. ME i  ME f
b.
c.
d.
W net  PE
W  KE
W net  KE
7. Friction converts kinetic energy to
a. mechanical energy.
b. potential energy.
c. nonmechanical energy.
d. total energy.
1
Name: ________________________
ID: A
8. Which of the following statements does not
describe force?
a. Force causes objects at rest to remain
stationary.
b. Force causes objects to start moving.
c. Force causes objects to stop moving.
d. Force causes objects to change direction.
10. How much power is required to lift a 2.0 kg mass at
a speed of 2.0 m/s?
a. 2.0 J
b. 4.0 J
c. 9.8 J
d. 39 J
11. What is the common formula for work? Assume
that W is the work, F is a constant force, v is the
change in velocity, and d is the displacement.
a. W = Fv
b. W = Fd
9. In which of the following scenarios is no net work
done?
a. A car accelerates down a hill.
b. A car travels at constant speed on a flat road.
c. A car decelerates on a flat road.
d. A car decelerates as it travels up a hill.
12. Question : 12-13
2
c.
W = Fd 2
d.
W = F2 d
Name: ________________________
ID: A
13.
14. What is the average power supplied by a 60.0 kg
person running up a flight of stairs a vertical
distance of 4.0 m in 4.2 s?
a. 57 W
b. 240 W
c. 560 W
d. 670 W
18. What is the kinetic energy of a 0.135 kg baseball
thrown at 40.0 m/s?
a. 54.0 J
b. 87.0 J
c. 108 J
d. 216 J
19. If a nonzero net force is acting on an object, then
the object is definitely
a. at rest.
b. moving with a constant velocity.
c. being accelerated.
d. losing mass.
15. As a basketball player starts to jump for a rebound,
the player begins to move upward faster and faster
until his shoes leave the floor. At the moment the
player begins to jump, the force of the floor on the
shoes is
a. greater than the player’s weight.
b. equal in magnitude and opposite in direction to
the player’s weight.
c. less than the player’s weight.
d. zero.
20. Which of the following energy forms is associated
with an object in motion?
a. potential energy
b. elastic potential energy
c. nonmechanical energy
d. kinetic energy
16. A horizontal force of 200 N is applied to move a 55
kg television set across a 10 m level surface. What
is the work done by the 200 N force on the
television set?
a. 550 J
b. 2000 J
c. 6000 J
d. 11000 J
21.
17. A more powerful motor can do
a. more work in a longer time interval.
b. the same work in a shorter time interval.
c. less work in a longer time interval.
d. the same work in a longer time interval.
3
Name: ________________________
ID: A
22. In which of the following scenarios is work done?
a. A weightlifter holds a barbell overhead for 2.5
s.
b. A construction worker carries a heavy beam
while walking at constant speed along a flat
surface.
c. A car decelerates while traveling on a flat
stretch of road.
d. A student holds a spring in a compressed
position.
28. What are the units of the coefficient of friction?
a. N
b. 1/N
c. N 2
d. The coefficient of friction has no units.
29. A force does work on an object if a component of
the force
a. is perpendicular to the displacement of the
object.
b. is parallel to the displacement of the object.
c. perpendicular to the displacement of the object
moves the object along a path that returns the
object to its starting position.
d. parallel to the displacement of the object
moves the object along a path that returns the
object to its starting position.
23. What is the potential energy of a 1.0 kg mass 1.0 m
above the ground?
a. 1.0 J
b. 9.8 J
c. 10 J
d. 96 J
24. Which form of energy is involved in weighing fruit
on a spring scale?
a. kinetic energy
b. nonmechanical energy
c. gravitational potential energy
d. elastic potential energy
30. If the mass in a horizontal mass-spring system was
doubled, the elastic potential energy in the system
would change by a factor of
a. 0 (no change).
b. 1/2.
c. 2.
d. 4.
25. If the sign of work is negative,
a. the displacement is perpendicular to the force.
b. the displacement is in the direction opposite the
force.
c. the displacement is in the same direction as the
force.
d. no work is done.
31. Two perpendicular forces, one of 45.0 N directed
upward and the other of 60.0 N directed to the
right, act simultaneously on an object with a mass
of 35.0 kg. What is the magnitude of the resultant
acceleration of the object?
a. 2.14 m/s 2
b. 3.00 m/s 2
c. 5.25 m/s 2
d. 1.41 m/s 2
26. Which are simultaneous equal but opposite forces
resulting from the interaction of two objects?
a. net external forces
b. field forces
c. gravitational forces
d. action-reaction pairs
32. A worker does 25 J of work lifting a bucket, then
sets the bucket back down in the same place. What
is the total net work done on the bucket?
a. –25 J
b. 0 J
c. 25 J
d. 50 J
27. In which of the following sentences is work used in
the everyday sense of the word?
a. Lifting a heavy bucket involves doing work on
the bucket.
b. The force of friction usually does negative
work.
c. Sam and Rachel worked hard pushing the car.
d. Work is a physical quantity.
4
Name: ________________________
ID: A
33.
36. A hockey stick hits a puck on the ice. Identify an
action-reaction pair in this situation.
a. The stick exerts a force on the puck; the puck
exerts a force on the stick.
b. The stick exerts a force on the puck; the puck
exerts a force on the ice.
c. The puck exerts a force on the stick; the stick
exerts a force on the ice.
d. The stick exerts a force on the ice; the ice
exerts a force on the puck.
34. Which of the following is the tendency of an object
to maintain its state of motion?
a. acceleration
b. inertia
c. force
d. velocity
37. A waitperson carrying a tray with a platter on it tips
the tray at an angle of 12 below the horizontal. If
the gravitational force on the platter is 5.0 N, what
is the magnitude of the force parallel to the tray
that tends to cause the platter to slide down the
tray? (Disregard friction.)
a. 0.42 N
b. 1.0 N
c. 4.9 N
d. 5.0 N
35. Which of the following is a true statement about
the conservation of energy?
a. Potential energy is always conserved.
b. Kinetic energy is always conserved.
c. Mechanical energy is always conserved.
d. Total energy is always conserved.
38. The magnitude of the gravitational force acting on
an object is
a. frictional force.
b. weight.
c. inertia.
d. mass.
5
Name: ________________________
ID: A
39. QUESTION 43,44,45
40.
41.
6
Name: ________________________
ID: A
42. A book with a mass of 2.0 kg is held in equilibrium
on a board with a slope of 60.0 by a horizontal
force. What is the normal force exerted on the
book?
a. 39 N
b. 61 N
c. 15 N
d. 34 N
47. A child pulls a balloon for 12 m with a force of 1.0
N at an angle 60 below horizontal. How much
work does the child do on the balloon?
a. –10 J
b. –6.0 J
c. 6.0 J
d. 12 J
48. A sled weighing 1.0 10 2 N is held in place on a
frictionless 20.0 slope by a rope attached to a
stake at the top. The rope is parallel to the slope.
What is the normal force of the slope acting on the
sled?
a. 94 N
b. 47 N
c. 37 N
d. 34 N
43. A hammer drives a nail into a piece of wood.
Identify an action-reaction pair in this situation.
a. The nail exerts a force on the hammer; the
hammer exerts a force on the wood.
b. The hammer exerts a force on the nail; the
wood exerts a force on the nail.
c. The hammer exerts a force on the nail; the nail
exerts a force on the hammer.
d. The hammer exerts a force on the nail; the
hammer exerts a force on the wood.
49. There are six books in a stack, and each book
weighs 5 N. The coefficient of static friction
between the books is 0.2. With what horizontal
force must one push to start sliding the top five
books off the bottom one?
a. 1 N
b. 5 N
c. 3 N
d. 7 N
44. A leaf falls from a tree and lands on the sidewalk.
Identify an action-reaction pair in this situation.
a. The tree exerts a force on the leaf; the sidewalk
exerts a force on the leaf.
b. The leaf exerts a force on the sidewalk; the
sidewalk exerts a force on the leaf.
c. The leaf exerts a force on the tree; the sidewalk
exerts a force on the leaf.
d. The leaf exerts a force on the sidewalk; the tree
exerts a force on the leaf.
50. Which of the following is a form of mechanical
energy?
a. internal energy
b. chemical potential energy
c. gravitational potential energy
d. electrical energy
45. The equation for determining gravitational
potential energy is PE g = mgh. Which factor(s) in
this equation is (are) not intrinsic to an object?
a. m
b. g
c. h
d. both g and h
51. Why doesn’t the principle of mechanical energy
conservation hold in situations when frictional
forces are present?
a. Kinetic energy is not completely converted to a
form of potential energy.
b. Potential energy is completely converted to a
form of gravitational energy.
c. Chemical energy is not completely converted to
electrical energy.
d. Kinetic energy is completely converted to a
form of gravitational energy.
46. A late traveler rushes to catch a plane, pulling a
suitcase with a force directed 30.0 above the
horizontal. If the horizontal component of the force
on the suitcase is 60.6 N, what is the force exerted
on the handle?
a. 53.0 N
b. 70.0 N
c. 65.2 N
d. 95.6 N
7
Name: ________________________
ID: A
52.
53. A net force of 6.8 N accelerates a 31 kg scooter across a level parking lot. What is the magnitude of the scooter’s
acceleration?
a. 0.22 m/s 2
c. 3.2 m/s 2
b. 0.69 m/s 2
d. 4.6 m/s 2
8
Name: ________________________
ID: A
54. The free-body diagram shown above represents a
car being pulled by a towing cable. In the diagram,
the 5800 N force is
a. the gravitational force acting on the car.
b. the backward force the road exerts on the car.
c. the upward force the road exerts on the car.
d. the force exerted by the towing cable on the
car.
58.
55. The free-body diagram shown above represents a
car being pulled by a towing cable. In the diagram,
which of the following is the gravitational force
acting on the car?
a. 5800 N
b. 775 N
c. 14 700 N
d. 13 690 N
56. A single force acts on an object. The components
of this force act along the +x-axis and the –y-axis.
The single force that will bring the object into
equilibrium has components that act along the
a. +x-axis and +y-axis.
b. +x-axis and y-axis.
c. x-axis and +y-axis.
d. x-axis and y-axis.
59. The statement by Newton that for every action
there is an equal but opposite reaction is which of
his laws of motion?
a. first
b. second
c. third
d. fourth
57. Which of the following is the rate at which work is
done?
a. potential energy
b. kinetic energy
c. mechanical energy
d. power
60. A newton is equivalent to which of the following
quantities?
a. kg
b. kgm/s
c. kgm/s 2
d. kg(m/s) 2
9
Name: ________________________
ID: A
61. A car goes forward along a level road at constant
velocity. The additional force needed to bring the
car into equilibrium is
a. greater than the normal force times the
coefficient of static friction.
b. equal to the normal force times the coefficient
of static friction.
c. the normal force times the coefficient of kinetic
friction.
d. zero.
64. Which of the following has the greatest power
output?
a. a weightlifter who lifts a 250 N weight 2.1 m in
3.0 s
62. A crate is carried in a pickup truck traveling
horizontally at 15.0 m/s. The truck applies the
brakes for a distance of 28.7 m while stopping with
uniform acceleration. What is the coefficient of
static friction between the crate and the truck bed if
the crate does not slide?
a. 0.400
b. 0.365
c. 0.892
d. 0.656
b.
a mechanic’s lift that raises a 1.2  10 4 N car
2.1 m in 12 s
c.
a car engine that does 1.2  10 3 J of work in
5.0 s
d.
a crane that lifts a 2.5  10 4 N beam at a speed
of 1.2 m/s
65. A free-body diagram represents all of the following
except
a. the object.
b. forces as vectors.
c. forces exerted by the object.
d. forces exerted on the object.
66. Which of the following energy forms is associated
with an object due to its position?
a. potential energy
b. positional energy
c. total energy
d. kinetic energy
63. A construction worker pushes a wheelbarrow 5.0 m
with a horizontal force of 50.0 N. How much work
is done by the worker on the wheelbarrow?
a. 10 J
b. 55 J
c. 250 J
d. 1250 J
67.
68. What causes a moving object to change direction?
a. acceleration
b. velocity
c. inertia
d. force
10
Name: ________________________
ID: A
69. Which statement about the acceleration of an
object is correct?
a. The acceleration of an object is directly
proportional to the net external force acting on
the object and inversely proportional to the
mass of the object.
b. The acceleration of an object is directly
proportional to the net external force acting on
the object and directly proportional to the mass
of the object.
c. The acceleration of an object is inversely
proportional to the net external force acting on
the object and inversely proportional to the
mass of the object.
d. The acceleration of an object is inversely
proportional to the net external force acting on
the object and directly proportional to the mass
of the object.
72. If the displacement of a horizontal mass-spring
system was doubled, the elastic potential energy in
the system would change by a factor of
a. 1/4.
b. 1/2.
c. 2.
d. 4.
73. A crate is released on a frictionless plank inclined
at angle  with respect to the horizontal. Which of
the following relationships is true? (Assume that
the x-axis is parallel to the surface of the incline.)
a. F y = F g
b.
c.
Fx = 0
F y = Fx
d.
none of the above
74. In general, Fnet equals
a. Ff.
b. Fg.
c. Fn.
d. F.
70. A child moving at constant velocity carries a 2 N
ice-cream cone 1 m across a level surface. What is
the net work done on the ice-cream cone?
a. 0 J
b. 0.5 J
c. 2 J
d. 20 J
75. How much elastic potential energy is stored in a
bungee cord with a spring constant of 10.0 N/m
when the cord is stretched 2.00 m?
a. 10.0 J
b. 20.0 J
c. 40.0 J
d. 200 J
71.
11
Name: ________________________
ID: A
76.
77. Gravitational potential energy is always measured
in relation to
a. kinetic energy.
b. mechanical energy.
c. total potential energy.
d. a zero level.
A variable force acts on a body and causes
the body to accelerate in the direction of the
force.
The force is plotted as a function of the distance
78. What are the units for a spring constant?
a. N
b. m
c. Nm
d. N/m
moved. On the graph obtained, the work done
by
the force is represented by the
(A) slope of the curve
(B) area under the curve
(C) point at which the curve intersects the distance
axis
(D) point at which the curve intersects the force axis
(E) difference between the initial and final point-
of the curve
12
Name: ________________________
ID: A
79.
80. As an object falls toward Earth,
a. the object does not exert a force on Earth.
b. the object exerts a downward force on Earth.
c. Newton’s third law does not apply.
d. the upward acceleration of Earth is negligible
because of its large mass.
13
Name: ________________________
ID: A
81. If friction is the only force acting on an object
during a given physical process, which of the
following assumptions can be made in regard to the
object’s kinetic energy?
a. The kinetic energy decreases.
b. The kinetic energy increases.
c. The kinetic energy remains constant.
d. The kinetic energy decreases and then
increases.
82.
83. A measure of the quantity of matter is
a. density.
b. weight.
c. force.
d. mass.
85. A free-body diagram of a ball falling in the
presence of air resistance would show
a. only a downward arrow to represent the force
of air resistance.
b. only a downward arrow to represent the force
due to gravity.
c. a downward arrow to represent the force due to
gravity and an upward arrow to represent the
force of air resistance.
d. an upward arrow to represent the force due to
gravity and a downward arrow to represent the
force of air resistance.
84.
86. Ball A has triple the mass and speed of ball B.
What is the ratio of the kinetic energy of ball A to
ball B.
a. 3
b. 6
c. 9
d. 27
14
Name: ________________________
ID: A
87. According to Newton’s second law, when the same
force is applied to two objects of different masses,
a. the object with greater mass will experience a
great acceleration, and the object with less
mass will experience an even greater
acceleration.
b. the object with greater mass will experience a
smaller acceleration, and the object with less
mass will experience a greater acceleration.
c. the object with greater mass will experience a
greater acceleration, and the object with less
mass will experience a smaller acceleration.
d. the object with greater mass will experience a
small acceleration, and the object with less
mass will experience an even smaller
acceleration.
89. Which of the following are examples of
conservable quantities?
a. potential energy and length
b. mechanical energy and length
c. mechanical energy and mass
d. kinetic energy and mass
90.
88.
15
Name: ________________________
ID: A
91.
92. Which of the following is the cause of an
acceleration?
a. speed
b. inertia
c. force
d. velocity
16
Name: ________________________
ID: A
93.
94. A sled traveling at a speed of 3.0 m/s slows to a
stop 4.0 m from the point where its passenger
rolled off. What is the magnitude of the horizontal
net force that slows the 110 N sled? (Assume ag =
9.81 m/s 2 .)
a. 130 N
b. 34 N
c. 37 N
d. 13 N
95. Which of the following formulas would be used to
directly calculate the kinetic energy of an object
with mass m bouncing up and down on a spring
with spring constant k?
1
a. KE  2 kx 2
1
b.
KE   2 kx 2
c.
KE  2 mv 2
d.
KE   2 mv 2
1
1
96. Which of the following equations is not an
equation for power, P, in terms of work, W,
displacement, d, time interval, t, force, F, and/or
velocity, v?
d
a. P  F
t
W
b. P 
t
c. P  Fv
Fv
d. P 
t
17
Name: ________________________
ID: A
97. In the free-body diagram shown above, which of
the following is the gravitational force acting on
the balloon?
a. 1520 N
b. 950 N
c. 4050 N
d. 5120 N
101. Question : 105-106
98. Which of the following refers to the sum of kinetic
energy and all forms of potential energy?
a. total energy
b.  energy
c. nonmechanical energy
d. mechanical energy
99. A ball is dropped from a person’s hand and falls to
Earth. Identify an action-reaction pair in this
situation.
a. The hand exerts a force on the ball; Earth
exerts a force on the hand.
b. Earth exerts a force on the ball; the hand exerts
a force on Earth.
c. Earth exerts a force on the hand; the hand
exerts a force on the ball.
d. Earth exerts a force on the ball; the ball exerts
a force on Earth.
100. Which of the following energy forms is not
involved in hitting a tennis ball?
a. kinetic energy
b. chemical potential energy
c. gravitational potential energy
d. elastic potential energy
18
Name: ________________________
ID: A
102.
103. Which of the following is the rate at which energy
is transferred?
a. potential energy
b. kinetic energy
c. mechanical energy
d. power
104. A 3.00 kg toy falls from a height of 1.00 m. What
will the kinetic energy of the toy be just before the
toy hits the ground? (Assume no air resistance and
that g = 9.81 m/s 2 .)
a. 0.98 J
b. 9.8 J
c. 29.4 J
d. 294 J
105.
106. Which of the following parameters does not depend
on how resistant a spring is to being compressed or
stretched?
a. compression distance
b. relaxed length
c. spring constant
d. stretching distance
107. The main difference between kinetic energy and
potential energy is that
a. kinetic energy involves position, and potential
energy involves motion.
b. kinetic energy involves motion, and potential
energy involves position.
c. although both energies involve motion, only
kinetic energy involves position.
d. although both energies involve position, only
potential energy involves motion.
19
Name: ________________________
ID: A
108.
109. In which of the following sentences is work used in
the scientific sense of the word?
a. Holding a heavy box requires a lot of work.
b. A scientist works on an experiment in the
laboratory.
c. Sam and Rachel pushed hard, but they could do
no work on the car.
d. John learned that shoveling snow is hard work.
110. Which of the following are not units of power?
a. hp
b. J
c. W
d. Js
111. Newton’s third law of motion involves the
interactions of
a. one object and one force.
b. one object and two forces.
c. two object and one force.
d. two objects and two forces.
20
Name: ________________________
ID: A
112.
21