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WorksheetsMotion Unit Review
Total questions: 43
Worksheet time: 40mins
According to Newton's First Law of Motion, why does the man continue moving after his bike hits the wall?
The acceleration of his body depends on his mass.
Balanced forces cause his body to not have a change in motion.
Inertia causes his body resists change in motion.
According to Newton's First Law of Motion, who might be most likely to run the zig-zag course the easiest and why?
A person with more mass because he/she has more inertia.
A person with more mass because he/she has less inertia.
A person with less mass because he/she has more inertia.
A person with less mass because he/she has less inertia.
According the Newton's Second Law of Motion, which cart will accelerate with the least amount of force and why?
The empty cart because it has less mass.
The full cart because it has more mass.
The empty cart because it has more inertia.
The full cart because it has less inertia.
According the Newton's Second Law of Motion, why does the second cart accelerate at a higher rate?
There is less force being applied to it.
There is more force being applied to it.
It has more mass.
It has less mass.
How does the image illustrate Newton's Third Law of Motion?
An object in motion stays in motion unless an unbalanced force acts on it.
For every action, there is an equal and opposite reaction.
An object with less mass will accelerate at a faster rate than an object with more mass.
How does the image illustrate Newton's Third Law of Motion?
An object with more mass will accelerate at a faster rate than an object with more mass.
For every action, there is an equal and opposite reaction.
An object in motion stays in motion unless an unbalanced force acts on it.
Which TWO (2) free-body diagrams are balanced?
a
b
c
d
What is the net force in the free-body diagram?
1400 N, up
1400 N, down
200 N, up
200 N, down
What is the net force in the free-body diagram?
100 N, up
30 N, right
20 N, left
100 N, left
What can be said about the motion of this object?
It will not move because the forces are balanced.
It will move right because this is the direction of the larger force.
It will move down because this is the direction of the larger force.
It will move up because the forces are balanced.
Which free-body diagram could represent a book on a desk being pushed to the right and friction acting left?
a
b
c
d
Which TWO (2) choices correctly describe the applied and resultant forces in the image?
In (a), the forces are added because they are applied in the same direction.
In (c), the forces are added because they are moving in opposite directions.
In (b), the forces are subtracted because they are applied in opposite directions.
How many Newtons of force is the boy on the left being pulled with?
450 N
900 N
0 N
100 N
Which TWO (2) statements correctly describes the forces in the image?
The forces between the teams are balanced.
The blue tim will win the game.
The red team will win the game.
The forces between the teams are unbalanced.
Which statement is a valid description of the car's motion based on evidence from the diagram? Remember: longer arrows indicate a stronger force.
The car’s speed decreases going up the hill because forces F and Ffr are unbalanced, with F (larger force) acting in the same direction as the velocity, causing the car to slow down.
The car’s speed increases going up the hill because forces F and Ffr are unbalanced, with F (larger force) acting in the same direction as the velocity, causing the car to speed up.
The car does not move because the forces are balanced.
Which statement is a valid description and explanation of the skier’s motion based on evidence from the diagram?
The skier’s speed increases going down the hill because forces Wx (downhill) and f (friction, pulling backwards) are unbalanced, with Wx (larger force) acting in the same direction as the velocity, causing the skier to speed up.
The skier’s speed decreases going down the hill because forces Wx (downhill) and f (friction, pulling backwards) are unbalanced, with Wy (smaller force) acting in the same direction as the velocity, causing the skier to slow down.
The skier will not move because the forces are balanced.
Which graph represents a balanced force? Remember, in a balanced force, there is NOT a change in motion.
a
b
c
Which TWO (2) graphs represent balanced forces? Remember, in a balanced force, there is NOT a change in motion.
1
2
3
4
Which graph represents an UNBALANCED force? Remember, in an unbalanced force, there IS a change in motion.
Which point on the graph represents a constant & negative acceleration (deceleration)?
R
T
U
W
Which TWO (2) points on the graph represent a constant & positive acceleration?
R
S
T
V
The diagram represents 4 different runners. Which runner has zero acceleration?
A
B
C
D
The graph shows Tom's speed for the first 18 seconds of his journey to school. What is happening at 12 to 18 seconds into his trip?
He is speeding up
He is slowing down.
He is coming to a stop.
Which of the following situations could the graph represent?
a ball being dropped off a table
a car accelerating north at a green light
an insect walking due east at a constant velocity
a student walking toward his locker, then turning around and walking away
According to the graph, which explanation presents the BEST argument for the claim that the amount of force applied to an object is proportional to an object's acceleration?
Every time the amount of force applied to an object is increased, the amount of acceleration of the object decreases.
Every time the volume of the object is doubled, the force needed to accelerate it doubles.
Every time the amount of force applied to an object is doubled, the acceleration of the object doubles.
How is an object's mass related to the force needed to accelerate the object?
Mass determines the direction of the force needed.
Mass determines the kind of force needed.
The greater the mass, the greater the force needed.
The smaller the mass, the greater the force needed.
When a rocket attempts to launch, its engine exerts a force downward. The rocket will not launch until the force of the engine is greater than the weight of the rocket. Why?
The forces must be equal and balanced for the rocket to move.
The force of the engine must be twice as strong as the force of gravity for the rocket to move.
The rocket must move at a constant velocity to take off.
The force of the engine must be greater than the force of gravity to produce a net force upward.
Simon rolled a ball down a hill. The ball stopped before it reached the bottom of the hill. Which of these MOST LIKELY stopped the ball from rolling?
mass
inertia
gravity
friction
Simon rolled a ball down a hill. Which of these describes the tendency for the ball to keep moving at the same speed in the same direction?
mass
inertia
gravity
friction
Which diagram would produce the greatest gravitational force between the two objects?
Diagram 1
Diagram 2
Diagram 3
Diagram 4
The force of gravity is related to the masses of the objects attracting each other. The data shows the force of gravity on a 1 kg mass on the surface of four planets in the solar system.
Mercury: 3.7 N
Venus: 8.9 N
Jupiter: 23.1 N
Neptune: 11 N
Which planet has the most mass?
Mercury
Venus
Jupiter
Neptune
The cart in which figure has more inertia? Why?
Figure A because it has more mass.
Figure B because it has less mass.
Figure A because it has less mass.
Figure B because it has more mass.
Which of the following best describes the concept in the image?
During an earthquake, inertia causes the building to move much more easily.
During an earthquake, friction makes it more difficult for the building to move.
During an earthquake, inertia causes the building to resist the change in movement.
Which TWO (2) of the following are MOST responsible for keeping the Earth in orbit around the sun?
mass
inertia
gravity
friction
Which is a correct description of the forces in the picture using Newton's Third Law of Motion?
Action: man pushing on wall
Reaction: friction causes wall to be hard to move.
Action: man pushing on wall
Reaction: wall pushing on man
Action: wall pushing on man
Reaction: man pushing on wall
Action: wall moves right
Reaction: wall moves back left to original position
Which is a correct description of the forces in the picture using Newton's Third Law of Motion?
Action: hose pushes on hand
Reaction: water pushes on hose
Action: water pushes on hose
Reaction: friction makes it difficult for water to come out
Action: water pushes on hand
Reaction: gravity pulls water down to the ground
Action: water pushes on hose
Reaction: hose pushes on hand
Oliver the dog doesn’t want to walk in the rain. He can make his owner pull harder on the leash to get him out the door by ____.
sitting on a tile floor
sitting on a laminate floor
sitting on a wood floor
sitting on a carpeted floor
While traveling along the straight section of track, the speed of the yellow car changed from 1.1 meters per second to 0.9 meters per second in 0.4 seconds. Which statement best describes the motion of the car during this period of time?
(Remember, acceleration is ANY change in motion, including speeding up, slowing down, and changing direction.)
The car was coming to rest.
The velocity of the car was constant.
The speed of the car was increasing.
The car was experiencing an acceleration.
Toy cars travel around a track. The red car moved at a constant speed along the curved segment of the path. While traveling around the curve, the car was
(Remember: Velocity is speed, and acceleration is ANY change in motion.)
changing velocity and accelerating
changing velocity without accelerating
moving at a constant velocity and accelerating
moving at a constant velocity without accelerating
Which statement below correctly analyzes the data in the graph?
An object with more mass will accelerate at a faster rate.
An object with less mass will accelerate at a faster rate.
An object with less mass will accelerate at a slower rate.
There is not a relationship between mass and acceleration.
A car is moving at 25mph left. A force is applied at 15N right, and another force is applied at 10N left (greater force applied in opposite direction of movement). Which correctly describes what is happening to the movement of the car?
The car is changing direction.
The car is moving at a constant speed (no change).
The car is speeding up.
The car is slowing down.
A motorcycle is moving at 50mph right. A force is applied at 10N right, and another force is applied at 5N left (greater force applied in direction of movement). Which correctly describes what is happening to the movement of the motorcycle?
The motorcycle is changing direction.
The motorcycle is moving at a constant speed (no change).
The motorcycle is speeding up.
The motorcycle is slowing down.
A skater is moving at 12mph left. A force is applied at 8N right, and another force is applied at 8N left (balanced forces right & left). Which correctly describes what is happening to the movement of the skater?
The skater is changing direction.
The skater is moving at a constant speed (no change in motion).
The skater is speeding up.
The skater is slowing down.
