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Net Forces and Newton's Laws Pre-Assessment

Total questions: 30

Worksheet time: 30mins

Name
Class
Date
1.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
2.
What is the net force?
a)
4.2 N left
b)
4.2 N right
c)
2.2 N left
d)
2.2 N right
3.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
4.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
5.
What is the net force?
a)
3 N left
b)
3 N right
c)
7 N left
d)
7 N right
6.
What is the net force?
a)
1.3 N left
b)
1.3 N right
c)
3.7 N left
d)
3.7 N right
7.
The graph shows how the speed of an object changed over time. During which segments of this graph were the forces acting on the object balanced?
a)
R only
b)
Q and S
c)
R and T
d)
R, S and T
8.
The diagram below shows a skateboarder pushing himself forward with a force of 25 N while the wind pushes back with a force of 5 N. How will the skateboarder be affected if the force of the wind increases to 8 N?
a)
The speed of the skateboarder will increase.
b)
The speed of the skateboarder will remain constant.
c)
The speed of the skateboarder will decrease.
d)
The skateboarder will come to a stop.
9.
You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
a)
60 N right
b)
10 N left
c)
60 n right
d)
50 N left
10.
Calculate the Net Force. 
a)
60N, Left 
b)
40N, Right 
c)
0 N
d)
60N, Right
11.

What kind of motion would be associated with the object in this free body diagram?

a)

Constant velocity

b)

At rest

c)

Accelerating

d)

Decelerating

12.

When force is increased, what happens to acceleration?

a)

Increases

b)

Decreases

13.

When mass is increased, what happens to acceleration?

a)

Increases

b)

Decreases

14.
The forces represented by the arrows in the diagrams are applied to the four objects that are at rest on a table. Which object is most likely to move to the right?
a)
Object W
b)
Object X
c)
Object Y
d)
Object Z
15.
The forces represented by the arrows in the diagrams are applied to the four objects that are at rest on a table. Which object is most likely to remain in place?
a)
Object W
b)
Object X
c)
Object Y
d)
Object Z
16.
A _______ is a push or pull.
a)
Newton
b)
Acceleration
c)
Momentum
d)
Force
17.
What is Newton's Second Law of Motion?
a)
F = m x a
b)
Action/Reaction
c)
Object in motion will stay in motion, object at rest will stay at rest
d)
Velocity
18.
What is Newton's First Law of Motion?
a)
F = m x a
b)
Every action has an equal an opposite reaction
c)
An object at rests stays, an object in motion stays in motion
d)
Friction
19.
What is the standard unit force is measured in?
a)
Newton
b)
Gram
c)
Pound
d)
Meter
20.
According to Newton's Second Law, if you increase the force applied to an object:
a)
It accelerates more
b)
It doesn't move
c)
You get more inertia
d)
It decelerates
21.
An object at rest will _____ if not outside forces are applied.
a)
Stay at rest
b)
Decrease mass
c)
Increase velocity
22.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
23.

An automobile you are riding in suddenly stops, but you continue to go forward.

a)

Newton's

1st

Law of Motion

b)

Newton's

2nd

Law of Motion

c)

Newton's

3rd

Law of Motion

24.

When the force on a car is doubled, the acceleration is doubled.

a)

Newton's

1st

Law of Motion

b)

Newton's

2nd

Law of Motion

c)

Newton's

3rd

Law of Motion

25.

A magician pulls a table cloth from under a table of dishes.

a)

Newton's

1st

Law of Motion

b)

Newton's

2nd

Law of Motion

c)

Newton's

3rd

Law of Motion

26.

The harder you hit a baseball, the faster it accelerates.

a)

Newton's

1st

Law of Motion

b)

Newton's

2nd

Law of Motion

c)

Newton's

3rd

Law of Motion

27.

You push against a wall and the wall is pushing back on you.

a)

Newton's

1st

Law of Motion

b)

Newton's

2nd

Law of Motion

c)

Newton's

3rd

Law of Motion

28.
Slamming on the brakes in a moving car makes a passenger move forward against his or her seat belt because
a)
the passenger has the inertia to keep moving forward
b)
the passenger is being pushed by the seats of the car
c)
the passenger is better able to stop themselves in this manner
d)
the passenger has an equal and opposite force supporting their weight
29.
Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?
a)
The mass of the car is greater than the mass of the basketballs
b)
The mass of the bowling balls is greater than the mass of the basketballs
c)
The van with the basketballs is bigger than the van with the bowling balls
d)
It should be equally as hard to push the two vans
30.
According to Newton's Third Law, what is the equal and opposite force to the downward force of gravity on a man standing on the beach?
a)
the man pulling upward on the earth
b)
the force of friction holding the man still
c)
the pull of the sun keeping the earth in orbit
d)
the surrounding air pressure keeping the man in equilibrium

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