Physics Review Questions

1. The car is described as traveling east at 30 km/h.
From which reference point in the diagram is the motion of the car most likely being
described?
A. 1
C. 3
B. 2
D. 4
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2. Alex is writing down notes as he watches his friend Carla in a bicycle race. He makes the
following notes.
Which notes show that Carla’s bicycle is in motion?
A. 1, 2, and 5
B. 1, 2, and 3
C. 2, 3, and 5
D. 2, 3, and 4
3. Isaac Newton discovered the three laws of motion. Which example best illustrates
Newton’s third law of motion, which describes action and reaction forces?
A. a rocket takes off from the ground
B. a book slides forward on a seat when the car stops
C. a heavier ball falls at the same speed as a lighter ball
D. a vehicle rounds a curve and changes its acceleration
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4. A skateboarder runs for a few steps and then jumps on his skateboard. His initial applied
energy carries him across a level surface for about 30 seconds. The skater notices that he
has skated a long time without ever having to push off the ground again.
What allows the skateboarder to move so long without pushing?
A. Gravity does not act on the skater and board.
B. The texture of the skating surface is very rough.
C. Momentum increases as the length of time increases.
D. There is little friction between wheels and surface.
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5. A ball on a cart is moving at a rate of 2 m/s. The cart suddenly stops and the ball
continues to travel in the same direction at the same speed. This is an example of the
A. law of gravity.
B. first law of motion.
C. second law of motion.
D. third law of motion.
6. When riding a roller coaster, an electric motor pulls the roller coaster to the top of the first
hill. What force pulls the roller coaster down the hill?
A. friction
B. speed
C. gravity
D. mass
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7. During class the teacher showed an enlarged image of a small piece of sidewalk. The
students saw that the sidewalk was rougher than they had previously thought.
Which effect would the rough surface have on a box that is pulled along the sidewalk?
A. It would reduce the amount of work that is performed when pulling the box.
B. It would oppose the force that is being applied to the box when it is pulled.
C. It would decrease the resistance between the forces that are pulling the box.
D. It would help reduce the force of gravity when the box is pulled.
9. When the two forces are applied to the moving bus, the bus will
A. come to a complete stop because of unbalanced forces.
B. accelerate because of unbalanced forces.
C. slow down because the forces are balanced.
D. move at a constant speed because the forces are balanced.
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11. Dennis conducted an investigation on the effect of friction on a toy car. Dennis had a
ramp that he moved onto four different surfaces. During each trial, he rolled the toy car
down the ramp and measured the distance the car traveled from the bottom of the ramp.
He repeated the investigation three times on each surface. His data are shown in the
table.
Toy Car Rolling Distance
Distance
(cm)
Surface
Trial 1 Trial 2 Trial 3
Wood
18
20
18
Blacktop
16
15
15
Gravel
10
10
8
Sand
8
7
6
Based on Dennis’s results, what should he conclude?
A. The toy car rolled farther on sand than on gravel
B. The toy car rolled the greatest distance on wood.
C. The toy car rolled the shortest distance on gravel.
D. The toy car rolled farther on sand than on blacktop.
13. Two forces are applied to a wooden box as shown below.
Which statement best describes the effect these forces have on the box?
A. The box does not move.
C. The box moves to the left.
B. The box moves to the right.
D. The box moves straight up.
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18. The box is being pushed to the right with a force of 300 newtons, and to the left with a
force of 400 newtons.
Which is the net force on the box?
A. 300 newtons
C. 700 newtons
B. 400 newtons
D. 100 newtons
19. A 60-kg man and a 25-kg boy, both on roller skates, push off of each other using their
hands. Which of these describes the motion of the two people?
A. The man moves farther and faster than the boy.
B. The boy moves farther and faster than the man.
C. The man moves farther but the same speed as the boy.
D. The boy moves faster but the same distance as the man.
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21. A student reads his paper on friction to the class. Which statement should he include in
his paper if he wants to present accurate information?
A. Friction increases mechanical advantage.
B. Friction opposes the direction of movement.
C. Friction makes movement of an object easier.
D. Friction reduces the amount of work used to move an object.
22. In the diagrams the arrows represent forces exerted on the boxes. Which diagram
represents a box that will remain stationary?
A.
B.
C.
D.
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24. Two people are pushing a car. One person is pushing with a force of 450 N and the other
person is pushing with a force of 300 N. What information is needed to determine the net
force applied to the car by the people?
A. the direction of the road
B. the direction of the forces
C. the weight of the two people
D. the weight of the automobile
25. The best example of balanced forces is a
A. car increasing speed.
B. bus parked in a garage.
C. ball kicked along a flat surface.
D. roller coaster slowing down on an incline.
26. Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the
same force but in opposite directions. If both girls continue to pull with the same force,
what will most likely happen?
A. One girl will pull the other toward her.
B. Both girls will stay in the same place.
C. Gravity will cause the rope to sag.
D. The rope will break.
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30. A student pushes a shopping cart filled with groceries. The cart has a mass of
12 kilograms (kg). The student pushes the cart with a force of 15 newtons (N). Assuming
the ground is frictionless, how fast will the cart accelerate until the student stops
applying the force?
A.
B.
C.
D.
31. Which sentence could not explain why the first place swimmer was faster than the second
place swimmer?
A. The winner experienced less water resistance.
B. There was more gravitational pull on the winner.
C. Friction slowed down the second place swimmer.
D. There was more force in the winner’s kicks and strokes.
33. A brick is resting on a level, smooth surface. When a student applies a horizontal force of
5 N to the brick, the force of friction on the brick is also 5 N. Which statement best
describes the effect of these two forces on the brick?
A. The net force on the brick is 0 N, and the brick begins to move.
B. The net force on the brick is 0 N, and the brick remains at rest.
C. The net force on the brick is 10 N, and the brick begins to move.
D. The net force on the brick is 10 N, and the brick remains at rest.
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34. Angela blows air into a balloon and holds the end of it closed with her fingers. When she
lets go of the end of the balloon, Angela observes that the release of the air propels the
balloon.
The propelling of the balloon from the release of the air is an example of which of
Newton’s laws?
A. For every action, there is an equal and opposite reaction.
B. A force of attraction exists between any two objects with mass.
C. The force of an object is the product of its mass multiplied by its acceleration.
D. An object in motion tends to stay in motion unless an unbalanced force acts upon it.
35. At Time 1, a force of F1 is applied to the left side of a block. The block moves to the right
with a constant acceleration. Then at Time 2, a smaller force, F2, is applied to the right
side of the block while F1 is still being applied.
What will most likely happen to the block at Time 2?
A. It will stop completely.
B. It will begin to accelerate to the left.
C. It will accelerate to the right at a faster rate.
D. It will continue to accelerate to the right at a slower rate.
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38. A boat moves forward through water with a force of 5,100 newtons (N). The water resists
with forces equaling 4,800 N. What is the net force acting on the boat?
A. 300 N
C. 5,100 N
B. 4,800 N
D. 9,900 N
39. Which mass is undergoing the greatest amount of acceleration?
A. 1 kg subjected to a force of 1 N
B. 1 kg subjected to a force of 100 N
C. 100 kg subjected to a force of 1 N
D. 100 kg subjected to a force of 100 N
40. The diagram shows three forces being applied to a crate on a floor.
If the crate is to remain stationary, what amount of force must be applied for z?
A. 800 N
B. 1200 N
D. 2400 N
C. 2000 N
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42. When the roller coaster rolls onto a flat section of track, what force would ultimately bring
it to a stop if no other forces are added?
A. gravity
C. friction
B.
D. acceleration
weight
43. The diagram shows two fans blowing air on a ball.
What is the net force acting on the ball?
A.
B.
C.
D.
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44. A ball rolls across the floor and slows down to a stop. Which force caused the ball to slow
down?
A. friction
C. magnetic
B. gravity
D. inertia
45. Two students are pushing a sofa across a room.
What is the net force applied to the sofa by the students?
A. 150 N
C. 250 N
B. 200 N
D. 400 N
48. During a collision, a seat belt slows the speed of a crash dummy. What is the direction of
the net force exerted by the seat belt compared to the direction of the crash dummy’s
motion?
A. in the same direction
C. in a downward direction
B. in a vertical direction
D. in the opposite direction
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49. Over which substance will the wooden box move most easily?
A.
B.
C.
D.
51. Alice lifted 5 bricks a height of 4 meters (m) each. Each brick weighed 110 newtons (N).
What was the total amount of work for Alice to move the bricks?
A. 20 joules
B. 440 joules
C. 550 joules
D. 2200 joules
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54. A student pushes a box to slide it across the floor. Which statement explains why the box
begins to move?
A. The weight of the box is greater than the force of friction.
B. The weight of the box is less than the force of friction.
C. The applied force is greater than the force of friction.
D. The applied force is less than the force of friction.
56. A car is traveling on a highway at a constant velocity. Which statement best describes the
forces acting on the car?
A. The forces acting on the car are balanced.
B. The forces acting on the car are in the same direction.
C. The forces acting on the car are continuing to increase.
D. The forces acting on the car are equal to the force of gravity.
58. Which is an example of balanced forces?
A. a door starting to open
B. a basketball being held
C. a truck beginning to accelerate
D. a book falling off a table
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59. Two students pull on a rope with 100 N in opposite directions. If the student on the left
increased her force to 125 N, the rope would most likely
A. go from rightward acceleration to leftward acceleration.
B. go from motionless to leftward acceleration.
C. decrease its leftward acceleration.
D. decrease its rightward acceleration.
60.
The block shown is accelerating in the direction of the 10-N force at a rate of
What is the magnitude of force X?
A. 1 N
B. 5 N
C. 10 N
D. 20 N
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61. In a game of tug-of-war, the people on each team pull with the amount of force shown.
In which direction will the center of the rope go?
A. to the west because the net force is greater in this direction
B. to the east because the net force is greater in this direction
C. to the west because the net force is less in this direction
D. to the east because the net force is less in this direction
65. An object is traveling to the right. Which of the following shows a force acting on the
object that will increase the speed of the object?
A.
C.
B.
D.
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67. Which statement best compares a parked car with a car moving along a straight line at a
constant speed?
A. There are no forces acting on either car.
B. Only the moving car is being subjected to forces.
C. Both cars are being subjected to balanced forces.
D. Only the parked car is being subjected to balanced forces.
68. A student walking quickly while carrying an orange on his lunch tray stops suddenly. The
orange will most likely roll off the tray due to
A. inertia of the orange.
B. centripetal force of the orange.
C. the friction acting on the orange.
D. the balanced forces acting on the orange.
69. A baseball player swings his bat and hits a ball along the ground. After some time, the
ball rolls to a stop on the level playing field.
What most likely causes the ball to stop moving?
A. a frictional force
C. the mass of the ball
B. the size of the bat
D. a gravitational force
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73. Rodger pushes his skateboard across a sidewalk.
If the sidewalk is level, which would most likely make the skateboard lose its kinetic
energy?
A. friction
C. magnetism
B. heat
D. temperature
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76. A student conducted an experiment with a toy cart by varying the force applied toward
the right and observing the result. The force applied to the left was constant at 50
N. The table contains the data collected from the experiment
MAGNITUDE OF FORCE ACTING
TOWARD THE RIGHT (N)
20N
rapid motion to left
30N
slow motion to left
40N
very slight motion to left
MOTION OF CART
For a force of 50 N to the right, the student would observe
A. a rapid motion to the right.
C. a slight motion to the right.
B. a rapid motion to the left.
D. no motion in either direction.
79. Gravity is a measurable force of attraction which acts upon objects. Which characteristic
determines the gravity of an object?
A. friction
C. tension
B. mass
D. weight
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80. A box is on a table. Maria and Julia push the box toward each other.
If Maria pushes with more force than Julia, in which direction will the box most likely
move?
A. North
C. South
B. East
D. West
81. The diagram shows forces acting on a box.
Which statement best describes what will happen to the box as a result of these forces
being applied?
A. The box will move up.
C. The box will move to the right.
B. The box will move to the left.
D. The box will remain stationary.
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82. When two unequal forces act in opposite directions on a moving object, the object will
A. absorb the forces.
B. come to an immediate stop.
C. continue to move in the same direction.
D. move in the same direction as the larger force.
83. An airplane is flying with a net force of zero. This means the airplane is
A. slowing down and losing altitude.
B. moving at a constant speed and losing altitude.
C. slowing down and traveling along a straight line.
D. moving at a constant speed and traveling along a straight line.
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85. To move a refrigerator, forces are applied as shown.
Which of these statements best describes what will happen if the forces are applied at
exactly the same time?
A. The refrigerator will move left, because of the greatest force on the right.
B. The refrigerator will move right, because the force is over a greater surface area.
C. The refrigerator will remain in place, because the forces are not enough to move a
refrigerator.
D. The refrigerator will remain in the same place, because the net force is zero.
86. A bowling ball sitting motionless on a table exerts a downward force on the table. The
force exerted by the table must be
A. equal to the force of the ball.
B. continually changing with the ball.
C. greater than the force of the ball.
D. less than the force of the ball.
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92. Marcus pushes against a refrigerator with a force of 300 newtons (N) to the right. Kelli
pushes against the refrigerator with a force of 360 N to the left.
How much additional force could Marcus apply in order to overcome the force applied by
Kelli?
A.
60 N to the right
C. 365 N to the left
B.
65 N to the right
D. 660 N to the left
94. When a bird flies, its wings push air downward. As a result the air pushes back upward on
the bird. Which law of motion most applies to the way the wings of a bird beat?
A. All forces act in action-reaction pairs.
B. The rate of acceleration of an object depends on the amount of force applied.
C. Objects in motion tend to remain in motion until acted upon by an another force.
D. An unbalanced force acting on an object equals the mass of the object multiplied by its
acceleration.
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96. The forces that act on an airplane as it flies are shown in the diagram.
If the airplane is moving forward through the air, which statement describes how one of
the forces acting on the airplane has been overcome?
A. The lift force has overcome the drag force.
B. The weight force has overcome the lift force.
C. The thrust force has overcome the drag force.
D. The drag force has overcome the weight force.
105. The diagram shows forces acting on a wagon.
A wagon is pulled to the right using a force of 20 N and to the left using a force of 30 N.
What is the net force on the wagon?
A. 10 newtons to the left
C. 10 newtons to the right
B. 50 newtons to the left
D. 50 newtons to the right
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109. Mountain bike tires have large, knob-like treads. These tires are useful on steep slopes
because they
A. increase friction.
C. increase the stopping distance.
B. carry heavy weights.
D. prevent braking of the bicycle.
115. Two forces act in opposite directions on a wood block. What will happen if the forces are
unbalanced?
A. The block will balance the forces.
C. The mass of the block will change.
B. The forces will reverse direction.
D. The position of the block will change.
116. A teacher was discussing with the class that a bowling ball has more inertia than a
basketball. Which physical property is most likely being compared?
A. area
B. mass
C. weight
D. volume
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117. Mrs. Knight drops her briefcase. When the briefcase lands on the floor, what is the
reaction force to the action force of the briefcase on the floor?
A. the force of the floor on the briefcase
B. the attraction of Earth for the briefcase
C. the force of air on the sides of the briefcase
D. the force of friction between the briefcase and the floor
119. Review the diagram.
If the ball is at rest on the soccer field and the four forces shown are applied at the same
time, the ball will
A. move to the left.
B. stay in the same position.
C. resist any change in movement.
D. accelerate in the direction of the smallest force.
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121. Students conducted an investigation by dropping a ball from two different heights. In the
first trial, the ball was dropped from a height of 10 meters and the speed was measured
after 2 seconds. In the second trial, the ball was dropped from a height of 20 meters and
the speed was measured after 2 seconds. Which of these describes the relationship
between the measured speeds in the two trials?
A. The speed in the second trial is twice the speed in the first trial.
B. The speed in the first trial will be the same as the speed in the second trial.
C. The speed in the first trial will be 10 m/sec faster than the speed in the second trial.
D. The speed in the second trial will be 10 m/sec faster than the speed in the first trial.
126. Which of the following combinations of forces results in the object accelerating to the
right?
A.
B.
C.
D.
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128. What is the amount of force required to accelerate a 20 kg object to 5 m/s²?
A. 0.25 N
C. 15 N
B. 4 N
D. 100 N
132. In a tug-of-war game, balanced forces are best represented when both teams cause the
flag to
A. stay in the middle.
B. fall to the ground.
C. move slowly in one direction.
D. be pulled quickly in one direction.
133. The rate of acceleration of an object is determined by the mass of the object and
A. the initial velocity of the object.
B. the forces acting on the object.
C. the direction of movement of the object.
D. the change in kinetic energy of the object.
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140. A student pushes on an object with a force of 6 newtons and the object does not move.
What force does the object exert on the student’s hands?
A. 0 N
C. 6 N
B. 3 N
D. 12 N
141. One person pulls on a rope with a force of 400 N to the right. Another person pulls on
the opposite end with a force of 600 N to the left. What is the unbalanced net force?
A. 200 N to the left
C. 600 N to the left
B. 400 N to the left
D. 1000 N to the left
142. A toy car starts at the top of a ramp, rolls down and slows to a stop.
Which acts most to bring the car to a stop?
A. friction
C. wind speed
B. magnetism
D. electrical force
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152. A helicopter ambulance flew from one hospital to another in a straight line. The pilot had
to change speed several times due to the presence of other aircraft.
What was the average speed of the helicopter during the trip?
A. 2.0 km/min
B. 2.5 km/min
C. 4.0 km/min
D. 7.5 km/min
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154. Alesia is taking an all-day ride on her bicycle. The graph shows how far she is from
home at different times during her ride.
During which time period is Alesia moving fastest?
A. 0–1 hours
B. 3–4 hours
C. 4–5 hours
D. 6–7 hours
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155. A toy robot moved from a starting point, traveling in a straight line at different speeds
and then turning around and returning to the starting point at different speeds.
What is the total distance that the toy robot traveled?
A. 12 m
B. 24 m
C. 48 m
D. 96 m
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158. This is a graph of the motion of a small boat traveling at a constant speed.
How far will the boat travel in 15 hours?
A. 10 km
B. 15 km
C. 25 km
D. 30 km
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160. Tisa and Lily ran a race in gym class. Lily was off balance so she did not start until 2
seconds had passed.
What were the average speeds of the two runners during the periods in which they were
actually running? (Note: Lily did not start running until time = 2 s.)
A. Tisa: 6.0 m/s; Lily: 6.0 m/s
B. Tisa: 6.0 m/s; Lily: 7.5 m/s
C. Tisa: 7.5 m/s; Lily: 6.0 m/s
D. Tisa: 7.5 m/s; Lily: 7.5 m/s
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161. This graph shows the motion of a bus.
If the bus continues moving at the same speed, what is the total distance that it will have
traveled in 7.5 minutes?
A. 1500 m
B. 7000 m
C. 7500 m
D. 8000 m
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162. The graph shows the motion of four cars. All four cars are moving east.
Which car has a constant velocity?
A. 1
C. 3
B. 2
D. 4
163. Two swimmers competed in a race. The graph shows how the position of both
swimmers changed over time during the race.
At what rate of speed did Swimmer 1 travel throughout the race?
A.
C.
B.
D.
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164. The motion of a toy car is shown in the graph below.
In which section of the graph is the car changing directions and returning to its starting
point?
A. W
B. X
C. Y
D. Z
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