Name _______________________________
St. Mary's H.S. Physics
Midterm Review
1. If a car accelerates uniformly from rest to 15 meters per
second over a distance of 100. meters, the magnitude
of the car’s acceleration is
A) 0.15 m/s 2
C) 2.3 m/s 2
B) 1.1 m/s 2
D) 6.7 m/s 2
2. In a race, a runner traveled 12 meters in 4.0 seconds as
she accelerated uniformly from rest. The magnitude of
the acceleration of the runner was
A) 0.25 m/s 2
C) 3.0 m/s 2
B) 1.5 m/s 2
D) 48 m/s 2
3. A child riding a bicycle at 15 meters per second
accelerates at -3.0 meters per second2 for 4.0 seconds.
What is the child’s speed at the end of this 4.0-second
interval?
A) 12 m/s
C) 3.0 m/s
B) 27 m/s
D) 7.0 m/s
4. A baseball dropped from the roof of a tall building takes
3.1 seconds to hit the ground. How tall is the building?
[Neglect friction.]
A) 15 m
B) 47 m
C) 30. m D) 94 m
5. A 25-newton weight falls freely from rest from the roof
of a building. What is the total distance the weight falls
in the first 1.0 second?
A) 4.9 m B) 2.5 m C) 19.6 m D) 9.8 m
6. A cart travels with a constant nonzero acceleration along a straight line. Which graph best represents the
relationship between the distance the cart travels and time of travel?
A)
B)
C)
D)
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7. The graph below represents the displacement of an
object moving in a straight line as a function of time.
9. Base your answer to the following question on the graph
below, which represents the motion of a car during a
6.0-second time interval.
What was the total distance traveled by the object
during the 10.0-second time interval?
A) 24 m
B) 16 m
C) 0 m
D) 8 m
8. The graph below shows the relationship between the
speed and elapsed time for an object falling freely from
rest near the surface of a planet.
What is the total distance the object falls during the first
3.0 seconds?
A) 12 m
B) 24 m
C) 44 m
D) 72 m
What is the acceleration of the car at t = 5.0 seconds?
A) 0.0 m/s 2
C) 2.5 m/s 2
B) 2.0 m/s 2
D) 10. m/s 2
10. Cart A has a mass of 2 kilograms and a speed of 3
meters per second. Cart B has a mass of 3 kilograms
and a speed of 2 meters per second. Compared to the
inertia and magnitude of momentum of cart A, cart B
has
A) greater inertia and a smaller magnitude of
momentum
B) the same inertia and a smaller magnitude of
momentum
C) the same inertia and the same magnitude of
momentum
D) greater inertia and the same magnitude of
momentum
11. A 5.00-kilogram block slides along a horizontal,
frictionless surface at 10.0 meters per second for 4.00
seconds. The magnitude of the block's momentum is
A) 50.0 kg m/s
C) 200. kg m/s
B) 20.0 kg m/s
D) 12.5 kg m/s
12. A 75-kilogram hockey player is skating across the ice at
a speed of 6.0 meters per second. What is the
magnitude of the average force required to stop the
player in 0.65 second?
A) 120 N B) 290 N C) 690 N D) 920 N
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13. A 3.1 kilogram gun initially at rest is free to move.
When a 0.015-kilogram bullet leaves the gun with a
speed of 500. meters per second, what is the speed of
the gun?
A) 2.4 m/s
C) 0.0 m/s
B) 500. m/s
D) 7.5 m/s
14. When a 1.0-kilogram cart moving with a speed of 0.50
meter per second on a horizontal surface collides with
a second 1.0-kilogram cart initially at rest, the carts
lock together. What is the speed of the combined carts
after the collision? [Neglect friction.]
A) 1.0 m/s
C) 0.25 m/s
B) 0.50 m/s
D) 0 m/s
15. Which object has the greatest inertia?
A)
B)
C)
D)
a 0.010-kg bullet traveling at 90. m/s
a 30.-kg child traveling at 10. m/s on her bike
a 490-kg elephant walking with a speed of 1.0 m/s
a 1500-kg car at rest in a parking lot
16. Which situation describes an object that has no
unbalanced force acting on it?
A) a laboratory cart moving down a frictionless 30.°
incline
B) a hockey puck moving at constant velocity across
ice
C) an apple in free fall
D) a satellite orbiting Earth
17. Which graph best represents the motion of an object in equilibrium?
A)
B)
C)
D)
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18. Two forces, F 1 and F 2, are applied to a block on a
frictionless, horizontal surface as shown below.
21. Which graph represents the relationship between the
magnitude of the gravitational force exerted by Earth
on a spacecraft and the distance between the center
of the spacecraft and center of Earth? [Assume
constant mass for the spacecraft.]
A)
If the magnitude of the block's acceleration is 2.0
meters per second 2, what is the mass of the block?
A) 1 kg
B) 5 kg
C) 6 kg
D) 7 kg
19. A student pulls a 60.-newton sled with a force
having a magnitude of 20. newtons. What is the
magnitude of the force that the sled exerts on the
student?
B)
A) 80. N B) 40. N C) 60. N D) 20. N
20. Which diagram best represents the gravitational
forces, F g, between a satellite, S, and Earth?
A)
B)
C)
D)
C)
D)
22. A distance of 1.0 meter separates the centers of two
small charged spheres. The spheres exert gravitational
force F g and electrostatic force F e on each other. If the
distance between the spheres’ centers is increased to
3.0 meters, the gravitational force and electrostatic
force, respectively, may be represented as
A)
B)
C)
D)
23. Two 20.-newton forces act concurrently on an object.
What angle between these forces will produce a
resultant force with the greatest magnitude?
A) 0º
B) 45º
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C) 90.º
D) 180.º
24. Two forces act concurrently on an object on a horizontal, frictionless surface, as shown in the diagram
below.
What additional force, when applied to the object, will establish equilibrium?
A) 16 N toward the right
C) 4 N toward the right
B) 16 N toward the left
D) 4 N toward the left
25. The diagram below represents two concurrent forces.
26. The vector diagram below represents the horizontal
component, F H, and the vertical component, F V , of a
24-newton force acting at 35° above the horizontal.
Which vector represents the force that will produce
equilibrium with these two forces?
A)
B)
C)
D)
What are the magnitudes of the horizontal and vertical
components?
A)
B)
C)
D)
F H = 3.5 N and F V = 4.9 N
F H = 20. N and F V = 14 N
F H = 4.9 N and F V = 3.5 N
F H = 14 N and F V = 20. N
27. The speedometer in a car does not measure the car’s
velocity because velocity is a
A) scalar quantity and has a direction associated with
it
B) vector quantity and does not have a direction
associated with it
C) scalar quantity and does not have a direction
associated with it
D) vector quantity and has a direction associated
with it
28. If the speed of a moving object is doubled, the kinetic
energy of the object is
A) unchanged
C) quadrupled
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B) halved
D) doubled
29. Which graph represents the relationship between the kinetic energy and the speed of a freely falling
object?
A)
B)
C)
D)
30. A pendulum is made from a 7.50-kilogram mass
31. Note that the question below only has three choices.
attached to a rope connected to the ceiling of a
gymnasium. The mass is pushed to the side until it is at
position A, 1.5 meters higher than its equilibrium
position. After it is released from rest at position A, the
The diagram below represents the path of a stunt car
pendulum moves freely back and forth between
that is driven off a cliff, neglecting friction.
positions A and B, as shown in the diagram below.
Compared to the horizontal component of the car's
velocity at point A, the horizontal component of the
car's velocity at point B is
A) smaller
C) the same
What is the total amount of kinetic energy that the
mass has as it swings freely through its equilibrium
position? [Neglect friction.]
A) 11 J
B) 94 J
C) 110 J
D) 920 J
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B) greater
32. A car moves with a constant speed in a clockwise
direction around a circular path of radius r, as
represented in the diagram above.
When the car is in the position shown, its acceleration
is directed toward the
A) east
B) west
C) south D) north
33. The diagram below shows an object moving
counterclockwise around a horizontal, circular track.
Which diagram represents the direction of both the
object's velocity and the centripetal force acting on the
object when it is in the position shown?
A)
B)
C)
D)
34. A golf ball is given an initial speed of 20. meters per
second and returns to level ground. Which launch
angle above level ground results in the ball traveling
the greatest horizontal distance? [Neglect friction.]
A) 60°
B) 45°
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C) 30.°
D) 15°