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Unit 3: Forces Review

Total questions: 35

Worksheet time: 19mins

Name
Class
Date
1.
All objects in the universe have a gravitational attraction to each other. 
a)
True
b)
False
2.
What force brings the pencil down?
a)
Applied
b)
Magnetic
c)
Normal
d)
Gravitational
3.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
4.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
5.

What is defined as a push or pull on an object?

a)

Force

b)

Motion

c)

Vector

d)

Speed

6.

This type of force resists motion between two surfaces that are pressed together

a)
contact
b)
gravity
c)
friction
7.

If the net force is equal to zero, the forces acting on the object are

a)

balanced

b)

unbalanced

8.

Balanced forces do not change the object's speed or 

a)
direction
b)
distance 
c)
time
d)
mass
9.
The unit of force is
a)
m/s
b)
m/s^2
c)
newton
d)
kg
10.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
11.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
12.

Jonny and Patty are pushing against a basketball. Both of them push against the ball on opposite sides with a force of 20 N to keep the ball still. What is the net force?

a)
400 N
b)
24 N
c)
0 N
d)
40 N
13.
What is the net force in this picture?
a)
50 Newtons to the right
b)
950 Newtons to the right
c)
950 Newtons to the left
d)
50 Newtons to the left
14.
What is it called when the force of gravity is acting on an object?
a)
Weight
b)
Sliding Friction
c)
Momentum
d)
Projectile Motion
15.
The sum of all forces acting on an object.
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
16.

What does Newton's first law say?

a)

Momentum is a force of moving objects

b)

Force is equal to mass times acceleration

c)

An object will remain at rest or move constant speed unless it is acted upon by an outside force

17.
Which of these uses friction?
a)
A parachute
b)
A ball falling through the sky
c)
Brakes on a bike
d)
A wind turbine
18.

Which object will most likely move farthest with only 3 newtons of force?

a)

A paper clip

b)

A computer

c)

Your science book

d)

A tissue box

19.

___________ is a measure of the amount of matter in an object.

a)

Gravity

b)

Weight

c)

Mass

20.

Which law states that for every action there is an equal and opposite reaction?

a)

1st Law

b)

2nd Law

c)

3rd Law

21.

Which law states that an object at rest stays at rest and an object in motion stays in motion unless an unbalanced force acts on it?

a)

1st Law

b)

2nd Law

c)

3rd Law

22.

Which activity would BEST demonstrate Newton's law of Inertia?

a)

A plate sits on a table top.

b)

A lady pushes a grocery cart.

c)

A child jumps on a trampoline.

d)

A boy swings a baseball bat.

23.

Which activity would BEST demonstrate the Law of Action/Reaction?

a)

A car traveling down the road.

b)

A rocket launching to space.

c)

A soccer ball sitting on the ground.

d)

A lady pushing a grocery cart.

24.

Which activity would BEST demonstrate the Law of Force and Acceleration?

a)

A lady pushes a grocery cart.

b)

A boy swings a baseball bat.

c)

A soccer ball sits on the ground.

d)

A rocket launches into space.

25.

What is the name of Newton's 1st Law of Motion?

a)

Law of Force and Acceleration

b)

Law of Action / Reaction

c)

Law of Inertia

26.

When there is an INCREASE in MASS of an object you will have a DECREASE in ______________.

a)

friction

b)

acceleration

c)

force

d)

gravity

27.

Mary is riding in a car when the driver suddenly slams on the brakes. Mary is jerked forward out of her seat. This is an example of which law of motion?

a)

2nd Law

b)

1st Law

c)

3rd Law

28.

A jellyfish swims through the water by pulling in water and then pushing the water back out in the opposite direction. This is an example of which law of motion?

a)

1st Law

b)

2nd Law

c)

3rd Law

29.

Billy pushes his little brother on a sled through the snow. He then tries to push his father on the the same sled. He noticed that it was much harder to push his father. Which law is this an example of?

a)

1st Law

b)

2nd Law

c)

3rd Law

30.

Which law is this picture an example of?

a)

1st Law

b)

2nd Law

c)

3rd Law

31.

Beth's bike remains stopped at the intersection until she begins pedaling again. Which law is this an example of?

a)

1st Law

b)

2nd Law

c)

3rd Law

32.

Ted is playing with a yoyo outside. When he pushes the yoyo downward it returns back to him with the same force. Which law is this an example of?

a)

1st Law

b)

2nd Law

c)

3rd Law

33.

Which law is this picture an example of?

a)

1st Law

b)

2nd Law

c)

3rd Law

34.

Which law is this picture an example of?

a)

Law of Inertia

b)

Law of Force and Acceleration

c)

Law of Action / Reaction

35.

According to Newton’s second law of motion, force is equal to mass times ______________________.

a)

inertia

b)

weight

c)

acceleration

d)

direction