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8th Review: Forces, Newton's Laws

Total questions: 50

Worksheet time: 54mins

Name
Class
Date
1.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
2.

What is defined as a push or pull?

a)

force

b)

motion

c)

vector

d)

speed

3.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
4.

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

a)

balanced

b)

unbalanced

5.
Balanced forces do not change the objects speed or 
a)
direction
b)
distance 
c)
time
d)
mass
6.
The unit of force is
a)
m/s
b)
m/s^2
c)
newton
d)
kg
7.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
8.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
9.
Jonny and Patty are pushing against a basketball. Both of them push against theball 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
10.
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
11.
What is it called when the force of gravity is acting on an object?
a)
Weight
b)
Sliding Friction
c)
Momentum
d)
Projectile Motion
12.
(T or F?) A balanced force is only an object that is not moving. 
a)
True 
b)
False
13.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
14.
At which letter is potential energy the highest?
a)
b
b)
c
c)
a 
d)
d 
15.
At which letter is kinetic energy the highest?
a)
a
b)
b
c)
c
d)
d
16.
(6.9C) When a lion eats a zebra and then uses the energy from the zebra to run, the lion's body converts- 
a)
chemical energy to mechanical energy
b)
electrical energy to chemical energy
c)
chemical energy to light energy
d)
mechanical energy to chemical energy
17.

When a pendulum swings, at which point is potential energy at its greatest? (6.8A)

a)

1

b)

2

c)

3

d)

4

18.

As a boulder rolls from the top of the hill to the bottom, how does its potential and kinetic energy change? (6.8A)

a)

Potential and kinetic energy both increase

b)

Potential increaes and kinetic decreases

c)

Potential decreases and kinetic increases

d)

Potential and kinetic energy both decrease

19.
When an object has potential energy, it is not moving.
a)
true
b)
false
20.
Who wins the tug of war with what net force?
a)
The person on the left with 20 N
b)
The person on the left with 80 N
c)
The people on the right with 20 N
d)
The people on the right with 100 N
21.
What type of force describes the red arrow?
a)
Gravity Force
b)
Friction Force
c)
Driving Force
d)
Air friction resistance Force
22.
Look at the evidence shown in the picture
a)
The box  is moving up
b)
The box is moving down
c)
The box is not moving
d)
The box is moving west
23.
By looking at the picture, what is the best conclusion?
a)
Friction is in the same direction as Motion
b)
The Friction force  is  opposite to the direction of  the motion force
c)
Friction does not count
d)
I forgot my I-pad
24.

Which law states that the acceleration of an object depends on the force exerted on it and its mass?

a)

1st Law

b)

2nd Law

c)

3rd Law

25.

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

a)

1st Law

b)

2nd Law

c)

3rd Law

26.

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

27.

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.

28.

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.

29.

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.

30.

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

31.

What is the name of Newton's 2nd Law of Motion?

a)

Law of Force and Acceleration

b)

Law of Inertia

c)

Law of Action / Reaction

32.

What is the name of Newton's 3rd Law of Motion?

a)

Law of Force and Acceleration

b)

Law of Inertia

c)

Law of Action / Reaction

33.

A force that opposes motion between objects that are touching is called...

a)

motion

b)

friction

c)

velocity

d)

acceleration

34.

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

a)

friction

b)

acceleration

c)

force

d)

gravity

35.

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

36.

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

37.

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

38.

Which law is this picture an example of?

a)

Law of Inertia

b)

Law of Force and Acceleration

c)

Law of Action / Reaction

39.

Which law is this picture an example of?

a)

Law of Inertia

b)

Law of Action / Reaction

c)

Law of Force and Acceleration

40.

Which law is this picture an example of?

a)

Law of Inertia

b)

Law of Force and Acceleration

c)

Law of Action / Reaction

41.

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

42.

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

43.
Objects tendency to resist change
a)
Friction
b)
Inertia
c)
Force
d)
Gravity
44.
Objects attraction to one another - like us to earth. 
a)
Friction
b)
Inertia
c)
Force
d)
Gravity
45.
Action/Reaction
a)
1st
b)
2nd
c)
3rd
46.
Equal and Opposite
a)
1st
b)
2nd
c)
3rd
47.
F = MxA
a)
1st
b)
2nd
c)
3rd
48.
Object at rest stays at rest.
a)
1st
b)
2nd
c)
3rd
49.
a)
1st
b)
2nd
c)
3rd
50.
a)
1st
b)
2nd
c)
3rd

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