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P-3 Forces & Motion Review

Total questions: 126

Worksheet time: 2hrs 7mins

Name
Class
Date
1.

A bus traveled 280 kilometers between two cities. It left the first city at 3:00 p.m. and arrived at the second city at 7:00 p.m. What was the average speed of the bus during the trip?

a)

4 km/h

b)

40 km/h

c)

280 km/h

d)

70 km/h

2.

During which time interval was the object moving with the greatest average speed?

a)

25 to 30 minutes

b)

0 to 5 minutes

c)

10 to 15 minutes

d)

15 to 20 minutes

3.

Which best explains why Clarence's statement about keeping his car at a constant velocity is wrong?

a)

The car track gave off heat.

b)

The car encountered air resistance.

c)

The speed of the car stayed the same.

d)

The direction of the car changed.

4.

Zookeepers carry a stretcher that holds a sleeping lion. The total mass of the stretcher and lion is 175 kg. The lion's forward acceleration is 2 m/s². What is the force necessary to produce this acceleration?

a)

177 N

b)

350 N

c)

87.5 N

d)

0.011 N

5.

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 remain in place because the forces are not enough to move a refrigerator.

b)

The refrigerator will remain in the same place because the net force is zero.

c)

The refrigerator will move left because of the greatest force on the right.

d)

The refrigerator will move right because the force is over a greater surface area.

6.

Which option arranges the cars in order of the fastest speed?

a)

Car A, Car B, Car C

b)

Car C, Car B, Car A

c)

Car B, Car A, Car C

d)

Car C, Car A, Car B

7.

What best describes the motion of an object?

a)

change in direction over time

b)

change in position over time

c)

change in height over time

d)

change in speed over time

8.

At which point did the object stop moving?

a)

P

b)

Q

c)

R

d)

S

9.

How far did this person travel?

a)

200 m

b)

300 m

c)

500 m

d)

1000 m

10.

Why does the ball begin to fall back to the ground?

a)

The ball loses mass as it begins to fall back to the ground.

b)

The force of friction pulls the ball toward the ground.

c)

The force of gravity pulls the ball toward the ground.

d)

The ball gains mass and begins to fall back to the ground.

11.

Which affects the motion of an object?

a)

force only

b)

mass only

c)

both force and mass

d)

neither force nor mass

12.

Sal & his dog ride on a cart going downhill. The dog jumps off midway down the hill. What will happen to the speed?

a)

The cart will slow down because of the loss of mass.

b)

The cart will speed up because of the loss of mass.

c)

The cart will slow down because of a decrease in friction.

d)

The cart will speed up because of an increase in friction.

13.

Which rock will require the most force to throw?

a)

rock 1

b)

rock 2

c)

rock 3

d)

rock 4

14.

A student moves 4 boxes along a friction-less surface. The student claims that the force required to move each box the same distance is proportional to the mass of each box. Which argument BEST supports the student's claim?

a)

The box with the highest mass requires the most force to move the same distance.

b)

The box with the highest acceleration requires the most force to move the same distance.

c)

The box with the lowest acceleration requires the most force to move the same distance.

d)

The box with the lowest mass requires the most force to move the same distance.

15.

A water rocket uses an amount of water and pressurized air to send a plastic rocket several feet into the air. As the water and air rush out the tail end of the rocket, the rocket shoots into the air. Explain the motion of the rocket.

a)

The inertia of the water and air must be overcome.

b)

The force of gravity of the rocket is greater than the water.

c)

The force of gravity must be overcome to achieve lift.

d)

For every action there is an equal and opposite reaction.

16.

Lauren tries to push a bookshelf across the room. As much as she tries, she cannot get the bookshelf to move. Why?

a)

Lauren did not apply enough force to the bookshelf and so the forces are unbalanced.

b)

Lauren did not apply enough force to the bookshelf and so the forces are still balanced.

c)

Lauren applied too much force to the bookshelf and now the forces on the bookshelf are balanced.

d)

Lauren applied too much force to the bookshelf and now the forces on the bookshelf are unbalanced.

17.

The four graphs show the properties of Newton's second law of motion. Which graph is incorrect and why?

a)

Graph W is incorrect because as the mass of an object increases, the acceleration of the object decreases.

b)

Graph X is incorrect because as the mass of an object increases, the force required to move the object decreases.

c)

Graph Y is incorrect because as the force applied to an object increases, the acceleration of the object decreases.

d)

Graph Z is incorrect because as the acceleration of an object increases, for force required to move the object decreases.

18.

When the index card is quickly pulled away from the glass in a horizontal direction, why does the disk fall straight down into the glass?

a)

equilibrium

b)

static friction

c)

kinetic friction

d)

inertia

19.

Earth pulls on the Moon and holds the Moon in its orbit. The Moon pulls on Earth with an equal and opposite force. This is an example of which of Newton's Laws?

a)

Newton's first law

b)

Newton's second law

c)

Newton's third law

d)

Newton's law of inertia

20.

How can you reduce the friction on a waterslide?

a)

by warming the surface of the slide

b)

by keeping the surface of the slide dry

c)

by running a constant stream of water down the slide

d)

by decreasing the slope of the slide

21.

Josh held a ball in the air. Which force was he acting against to keep the ball in the air?

a)

inertia

b)

friction

c)

gravity

d)

heat

22.

Review the graph which plots total distance traveled versus time of travel for a moving object. Why do the values on the graph form a straight line?

a)

The speed is constant.

b)

The distance remains unchanged.

c)

The direction of motion stays the same.

d)

The speed gradually increases over time.

23.

which graph represents a car that is moving at constant speed?

a)

graph A

b)

graph B

c)

graph C

d)

graph D

24.

Which graph represents a car that is decreasing in speed?

a)

graph A

b)

graph B

c)

graph C

d)

graph D

25.

Which graph represents a car that is not moving?

a)

graph A

b)

graph B

c)

graph C

d)

graph D

26.

Which graph represents a car with positive acceleration?

a)

graph A

b)

graph B

c)

graph C

d)

graph D

27.
A location to which you compare another location is known as a ___________  ___________.
a)
Reference Point
b)
Unbalanced Force
c)
Relative Motion
d)
Actual Motion
28.
The force that resists motion between two surfaces is called ____________.
a)
Force
b)
Gravity
c)
Friction
d)
Inertia
29.
The resistance to a change in an object’s speed or direction is ___________.
a)
Force
b)
Speed
c)
Motion
d)
Inertia
30.

The measure of the distance an object moves over a period of time is _______.

a)

Inertia

b)

Speed

c)

Motion

d)

Force

31.
Use the triangle formula to help you solve the problem.
Calculate the speed for a car that went a distance of 125 kilometers in 2 hours time.
a)
62.5 mph
b)
62.5 km/hr
c)
250 mph
d)
250 km/hr
32.
Use the triangle formula to help you solve the problem.
How much time does it take for a bird flying at a speed of 45 kilometers per hour to travel a distance of 1,800 kilometers?
a)
40 kilometers/hour
b)
40 hours
c)
40 seconds
d)
40 kilometers
33.
Use the triangle formula to help you solve the problem.

The pitcher’s mound in baseball is 85 m from the plate. It takes 4 seconds for a pitch to reach the plate. How fast is the pitch?
a)
21.25 mph
b)
340 mph
c)
21.25 m/sec
d)
340 m/sec
34.
In which of the following graphs below are both runners moving at the same speed? 
a)
A
b)
B
c)
C
d)
D
35.

At what time interval is the person moving at a constant speed?

a)

Between 0-6 seconds

b)

Between 6-11 seconds

c)

Between 11-18 seconds

d)

At 14 seconds

36.

On a distance time graph, the x axis is always labeled...

a)

Time

b)

Distance

c)

Speed

d)

Inertia

37.
Who won the 25 mile race?
a)
The Real John Lee
b)
Fake John Lee
c)
Priscah Jeptoo
d)
They tied
38.
What is happening between point C and D?
a)
The object is decelerating
b)
The object is slowing down
c)
The object is returning to its starting position
d)
The object is accelerating
39.
Which object allows us to determine that the train is in motion?
a)
The sky
b)
The trees
c)
The passengers
d)
The windows on the train
40.
When you jump off the ground, you put force on the ground and....
a)
the ground doesn't put force on you.
b)
the ground puts less force back on your feet.
c)
the ground puts more force back on your feet.
d)
the ground puts equal and opposite force back on your feet.
41.

If a basketball is sitting still on the ground. Which of the following describe the forces acting on the basketball?

a)

There are no forces acting on the basketball because it's at rest.

b)

The basketball is putting force on the ground.

c)

The basketball is putting force on the ground and the ground is putting force on the basketball. All forces are balanced.

d)

The ground is putting force on the basketball and gravity is forcing the ball down.

42.

What unit do scientists use to measure force?

a)

Distance

b)

Time

c)

Newtons

d)

Pounds

43.

Which of the following is a unit of speed?

a)

Seconds

b)

Millimeters

c)

Newtons

d)

Millimeters/second

44.

Which of the following is a unit of distance?

a)

Hours

b)

Meters

c)

Newtons

d)

Meters/hours

45.

On a distance time graph the y axis is always labeled...

a)

Distance

b)

Time

c)

Speed

d)

Newtons

46.

At which stage is the person moving fastest?

a)

A

b)

B

c)

C

d)

D

47.

Which answer choice below best describes what is happening to this go kart's movement between 20 and 40 seconds?

a)

The distance is increasing but the time is not. So the go kart is not moving.

b)

The distance and time are increasing together, so the go kart is moving at a constant speed.

c)

Both the distance and time are increasing but the time is increasing faster, so the go kart is not moving.

d)

The time is increasing but the distance is not. So the go kart is not moving.

48.

On a distance-time graph the steeper the line, the....

a)

slower the speed of the object

b)

further the object is getting from home

c)

closer the object is getting to home

d)

faster the speed of the object

49.

The first law of motion states....

a)

That objects will only move or stop moving when balanced forces act on them.

b)

That objects will only move or stop moving when unbalanced forces act on them.

c)

That objects will only have inertia when at rest.

d)

That objects will have more force when they're moving slower.

50.

Which of the following represents a place with very little friction?

a)

A dry road

b)

A road with pebbles

c)

An ice skating rink

d)

A sandy beach

51.

When you paddle a canoe, the canoe goes forward. This example is MOST DIRECTLY an example of which Law of Motion?

a)

An object at rest will stay at rest

b)

For every force there's an equal and opposite force

c)

Inertia

52.

Seatbelts are effective in keeping passengers safe because they work against the force of...

a)

Friction

b)

Inertia

c)

Air resistance

d)

Newtons

e)

Net force

53.

You know something is moving if its position changes against a background, which is called . . .

a)

position

b)

motion

c)

frame of reference

d)

reference point

54.

You can measure time in . . .

a)

hours (hr)

b)

minutes (min)

c)

seconds (sec)

d)

all of the above

55.

Any change in velocity (speed and/or direction) of motion . . .

a)

speed

b)

velocity

c)

acceleration

d)

force

56.

The speed of an object in a particular direction is called . . .

a)

speed

b)

velocity

c)

acceleration

d)

force

57.

The force of attraction between two objects; increases as the mass of the objects increase; decreases as the distance between the objects increases . . .

a)

gravity

b)

friction

c)

balanced forces

d)

unbalanced forces

58.
What is the formula to calculate speed?
a)
Speed = time/distance
b)
Speed = distance/time
c)
Speed = distance x time
d)
Speed = time x distance
59.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
60.
Can be measured in meters per second (m/s)
a)
Distance
b)
Time
c)
Speed
d)
Acceleration
61.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
62.
When a car goes around a corner at 20 mph, why do we say it  accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
63.
Acceleration only takes place when things speed up. 
a)
True
b)
False
64.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car turning a curve at a constant speed
65.
A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
66.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
67.
A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?
a)
0 m/s
b)
40 m/s2
c)
-40 m/s2
d)
40 m/s
68.
Acceleration can be classified as _______________
a)
Speeding up
b)
Slowing Down
c)
Changing directions
d)
All of the above
69.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
70.
The picture of the position vs. time graph shows an object that is...
a)
accelerating/speeding up
b)
moving at a constant speed 
c)
not moving 
d)
accelerating/slowing down. 
71.
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
a)
2.2m/s2
b)
7.0m/s2
c)
5.7m/s2
d)
70m/s2
72.
Why does a car accelerate as it round a corner at a constant speed?
a)
Its direction changes
b)
It doesn't
c)
It slows down
d)
Its speeds up  
73.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
74.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
75.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
76.
How can acceleration be zero?
a)
a car runs out of gas and slowly rolls to a stop
b)
a car decreases speed at a constant rate until it comes to rest
c)
car has constant speed and is traveling on a straight path
d)
the car travels round trip and is back at the starting point
77.

Which of the following has the MOST momentum?

a)

rolling ping-pong ball

b)

rolling bowling ball

c)

rolling soccer ball

d)

rolling basketball

78.

Which object has more momentum?

a)

Baseball in the pitchers hand

b)

baseball, lost, in a messy room

c)

baseball in flight

d)

baseball in a catchers mitt

79.

Which is the most important factor in an object's momentum?

(2 answers)

a)

shape

b)

mass

c)

velocity

d)

volume

80.

If an object has a momentum of 40 kgm/s and a mass of 60 kg, what is it's velocity?

a)

2400 m/s

b)

1.5 m/s

c)

240 m/s

d)

.67 m/s

81.

If an object has a velocity of 15 m/s and a momentum of 30 m/s, what is its mass?

a)

450 m/s

b)

2 m/s

c)

4,500 m/s

d)

.5 m/s

82.

If an object has a mass of 20 kg and a velocity of 4 m/s, what is the momentum of the object?

a)

80 kgm/s

b)

4 kgm/s

c)

5 kgm/s

d)

.2 kgm/s

83.

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

a)

Skater 1 experiences a greater change in momentum

b)

Skater 2 experiences a greater change in momentum

c)

Skater 1 has a greater speed than Skater 2

d)

Skater 1 experiences a greater force

84.
What happens to the speed of the wagon as the rain collects inside of it?
a)
it decreases
b)
it remains constant
c)
it increases
85.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
86.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
87.
The definition of momentum is
a)
Mass in Motion
b)
The size of an object
c)
The velocity of an object
d)
A comparison between two objects
88.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
89.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
90.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
91.

__________ is the amount of matter in an object. It does not change regardless of location

a)

Weight

b)

Mass

92.

______________ is how heavy an object is. It is determined by the pull of gravity

a)

Weight

b)

Mass

93.

Mass is ________. (more than one answer)

a)

the quantity of matter in an object.

b)

the measure of an object's inertia.

c)

equal to the weight of an object.

d)

constant for most objects.

94.

Weight is _________.

a)

the quantity of matter in an object.

b)

the measure of an object's inertia.

c)

the force exerted by gravity on an object's mass.

d)

equal to the mass of an object.

95.

Weight is constant.

a)

True

b)

False

96.

Mass is often constant for a given object.

a)

True

b)

False

97.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
98.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
99.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
100.
Which has more mass, Earth or the Moon?
a)
Earth
b)
Moon
c)
The same
101.
The scientific unit of weight is
a)
Kg
b)
N
c)
pounds
d)
Kgm/s
102.
The scientific unit for mass is
a)
Kg
b)
N
c)
pounds
d)
ounces
103.
The mass of an object ___________ as it moves away from the center of Earth
a)
stays the same
b)
decreases
c)
increases
d)
doubles
104.
The weight of an object _________ as it moves away from the center of Earth.
a)
increases
b)
stays the same
c)
triples
d)
decreases
105.
As an object's mass increases, its gravitational pull will ____________.
a)
decrease
b)
increase
c)
stay the same
d)
get weaker
106.
If an object has more mass, then it will
a)
weigh more.
b)
weigh less.
c)
weigh the same as an object with less mass.
d)
always have more volume than an object with less mass.
107.

What is Newton's 1st Law?

a)

For every action there is an equal and opposite reaction.

b)

An object at rest will stay at rest, an object in motion will stay in motion, unless an unbalanced force acts upon it.

108.

What is Newton's 2nd Law?

a)

For every action there is an equal and opposite reaction.

b)

Acceleration depends on two variables, the mass of the object and the amount of force.

109.

What is Newton's 3rd Law?

a)

For every action there is an equal and opposite reaction.

b)

Acceleration depends on two variables, the mass of the object and the amount of force.

110.

What explains why objects resist changes in their state of motion?

a)

gravity

b)

inertia

c)

force

d)

friction

111.

Newton's Second Law is based on two variables, they are .....

a)

mass and the amount of force

b)

gravity and friction

112.

Newton's first law states that an object must travel at a constant speed and in ___________, unless an unbalanced force acts on it.

a)

in a circle

b)

a wave like manner

c)

the same direction

113.

What would happen if a ball was kicked is space?

a)

It continues in the same direction, speeding up as it goes.

b)

It continues in the same direction, speeding up as it goes.

c)

It continues to move in the same direction unless it hits something or is affected by gravity or another force.

114.

Which way would a swimmer push to move forward in the water?

a)

To the left

b)

Forward

c)

Backward

d)

To the right

115.

The reason a boat bounces off the dock when it hits it.

a)

The boat and the dock repel each other.

b)

When the boat exerts a force on the dock, the dock exerts a force on the boat.

116.
A sled sliding on a flat, icy surface with a constant velocity is best described by
a)
Newton’s first law of motion for objects at rest.
b)
Newton’s first law of motion for objects in motion.
c)
Newton’s second law of motion.
d)
Newton’s third law of motion.
117.
Which law explains when a magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Law 1
b)
Law 3
118.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
119.
A person in car  slides to the right when going through a very sharp left turn on the highway. 
a)
1st Law
b)
2nd Law
c)
3rd Law
120.
An object will not have any inertia if it is __________?
a)
Accelerating
b)
Moving in a circle
c)
In space
d)
… Nonsense! All objects have inertia
121.
To test Newton’s law of gravity, Ben and Jerry climbed the football stadium at school and dropped an egg from the very top of the bleachers. Their egg dropped data can be seen in the table According to this data, What conclusion can the boys make regarding Newton’s law of gravity?
a)
a)  No conclusion can be drawn from the data
b)
a)  The acceleration due to gravity is not constant
c)
a)  The acceleration due to gravity of 9.8 m/s2 is refuted
d)
a)  The acceleration due to gravity of 9.8 m/s2 is supported
122.
Which of these best describes why your weight (on Earth) would change on another planet?
a)
weight doesn’t change, no matter where you are
b)
different planets have different gravitational pulls
c)
In general, the smaller the planet, the greater weight
d)
dehydration effects on different planets change weight
123.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
124.
a)
1st
b)
2nd
c)
3rd
125.
a)
1st
b)
2nd
c)
3rd
126.
Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.
a)
The Law of Inertia
b)
The Law of Acceleration
c)
The Law of Conservation of Momentum

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