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Module 3 "Forces & Newton's Laws"

Total questions: 57

Worksheet time: 28mins

Name
Class
Date
1.
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

2.
Two forces act on an object to the right at the same time.  What force is required to bring the object into equilibrium?
a)

9 N to the right

b)

9 N to the left

c)

3 N to the left

d)

18 N to the left

3.
What is the net force acting on the block?
a)

4 lbs to the right

b)

6 lbs to the right

c)

14 lbs to the right

d)

40 lbs to the right

4.
A measure of the amount of matter in an object
a)
mass
b)
weight
c)
gravity
d)
pounds
5.
A force of attraction between 2 object that is directly related to mass and indirectly related to distance.
a)
mass
b)
weight
c)
gravity
d)
kilogram
6.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
7.
Which of the following will not change in different gravitational fields?
a)
wieght
b)
force
c)
mass
d)
pounds
8.
Which of the following will change with different gravitational forces?
a)
mass
b)
amount of matter in an object
c)
weight
d)
kilograms
9.
A measure of gravitational force on an object.
a)
gravity
b)
weight
c)
mass
d)
kilograms
10.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
11.
Scientists measure weight using which SI unit?
a)
Pounds
b)
Newtons
c)
M/S
d)
Kg
12.
When an object is falling, and it reaches it's maximum speed because air resistance is equal to the force of gravity, the object has reached __________________________.
a)
Free Fall
b)
Terminal Velocity
c)
Projectile Motion
d)
Orbit
13.
What force causes objects falling near Earth's surface to slow down?
a)
Gravity
b)
Air Resistance
c)
Centripetal Force
d)
Newtons
14.
If a bowling ball and a feather were dropped at the same time, in a room with no air resistance (vacuum), which object will hit the ground first?
a)
Bowling Ball
b)
Feather
c)
Both would hit at the same time
d)
Neither one would hit the ground because air is what pushing things down.
15.

When a student runs and kicks a ball, they have applied an ___________ force to move the ball.

a)

Balanced

b)

Magnetic

c)

Spring

d)

Unbalanced

16.

Letting go of a balloon full of air or shooting a water rocket is demonstrating Newton's ______ _______ ________ _________ because the air comes out of the back and the balloon moves forward.

a)

1st law of motion

b)

2nd law of motion

c)

3rd law of motion

d)

13th law of motion

17.

What law is best described by inertia?

a)

1st

b)

2nd

c)

3rd

d)

law of conservation of mass

18.

A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.

a)

The Law of Inertia (1st law)

b)

The Law of Acceleration (2nd law)

c)

The Law of Conservation of Momentum

d)

Action Reaction Law (3rd law)

19.

What SI unit do we usually measure mass in?

a)

Newtons

b)

Joules

c)

Force

d)

Kilograms

20.

What is Newton's First Law

a)

F=ma

b)

Every action has an equal and opposite reaction

c)

An object at rest stays at rest, an object in motion stays in motion.

d)

Friction

21.

Newton's third law states that any action will have a(n) _______ and ______ reaction

a)

Equal and similar

b)

Equal and opposite

c)

Equal and different

d)

Greater and opposite

22.

8 N to the left , and 4 N to the right. Find the net force. Is this balanced

a)

12 N Right No

b)

4 N Left No

c)

12 N Right Yes

d)

4 N Left Yes

23.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
24.
The force that acts in the opposite direction of motion when two surfaces come in contact. 
a)
Force
b)
Friction
c)
Static
d)
Kinetic 
25.
What direction does friction act relative to motion?
a)
in the same direction
b)
in the opposite direction 
c)
need more information
d)
depends on the force
26.

Without friction, an object in motion would never stop.

a)

true

b)

false

27.

Which of these materials do you predict would have the MOST amount of friction?

a)

metal

b)

tile

c)

sand paper

d)

denim

28.

Rough surfaces have _________

a)

more microwelds

b)

less friction

c)

the same level of friction

29.

When we rub our hands together _________.

a)

frictional force works between them

b)

energy is released

c)

our hands become warm

d)

all off the above

30.

Types of forces

(a)  

31.

Types of forces

(a)  

32.
Which of the following is an example of friction that is harmful?
a)
Pencil marking on paper
b)
Engine parts wearing out
c)
sand placed on ice in the winter
d)
Using an eraser to erase marks
33.

Types of friction include

a)

static friction.

b)

sliding friction.

c)

rolling friction

d)

all of the above

34.

You use _____ friction when you leave marks on paper with a pencil “lead.”

a)

static friction.

b)

sliding friction.

c)

rolling friction.

35.

The weakest type of friction that occurs between solid surfaces is _____ friction.

a)

sliding friction

b)

rolling friction

c)

static friction

d)

None of the above

36.
Which objects have a STRONG force of gravity?
a)
Objects with GREATER mass, like elephants
b)
Objects with LESS mass, like mice
37.
As distance between two objects increase the pull of gravity 
a)

Increases

b)

Decreases

c)

Stays the same

38.
The force of gravity acting on an object is the object's ______.
a)

mass

b)

matter

c)

weight 

d)

friction 

39.

Which of the following never changes no matter where you are?

a)

weight

b)

force

c)

mass

d)

pounds

40.
What does this tool measure?
a)
weight
b)
meters
c)
mass
d)
force
41.
What does this tool measure?
a)
weight
b)
meters
c)
mass
d)
force
42.

2. These are the sticking points (bumps) between two surfaces that result in friction.

(a)  

43.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
44.
The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?
a)
50 kg and 490 N
b)
100 kg and 490 N
c)
50 kg and 980 N
d)
100 kg and 980 N
45.
What is gravity?
a)
A force
b)
Energy
c)
A push
d)
All of them
46.

Which has more mass, Earth, Moon, Mars, or Jupiter?

a)

Earth

b)

Moon

c)

Mars

d)

Jupiter

47.
Which has a STRONGER force of gravity, Earth or the Moon?
a)
Earth
b)
Moon
48.

As the direction of thrust points dowwards, the water rocket will ________

a)

flip over

b)

increase in speed upwards

c)

increase speed in the horizontal direction

d)

decrease in speed upwards

49.

If Brayden's mass on Earth is 60 kilograms. What is his mass on the moon?

a)

60 Kilograms.

b)

10 Kilograms.

c)

100 Kilograms

d)

0 Kilograms

50.

Newton’s law states that for every action, there is an ________ reaction.

a)

unequal and opposite

b)

equal and similar

c)

stronger and opposite

d)

equal and opposite

51.

What happens to the gravitational force between two objects if the distance between them is doubled?

a)

It doubles

b)

It halves

c)

It becomes four times weaker

d)

It remains the same

52.

Which of the following is an example of Newton's third law of motion?

a)

A book resting on a table

b)

A rocket launching into space

c)

A car accelerating on a highway

d)

A ball rolling down a hill

53.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move up. 
54.
What is the net force?
a)
30 N left
b)
25 N right
c)
5 N left
d)
55 N right
55.

These forces are...

a)

Balanced

b)

Unbalanced

56.

What is true about this image?

a)

It shows unbalance forces.

b)

It shows balanced forces.

c)

The people on the right are winning.

d)

The people on the left are winning.

57.

What is true about this picture?

a)

the forces are balanced

b)

the net force is 10N

c)

The net force is 3 N

d)

The net force is 7N

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