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Forces and Newton's Laws of motion

Total questions: 50

Worksheet time: 44mins

Name
Class
Date
1.

A force is a _______ or _______ on an object.

a)

pull

b)

touch

c)

push

d)

motion

2.

Two equal forces acting in opposite directions on an object

a)

Inertia

b)

Balanced Force

c)

Push

d)

Unbalanced Force

3.

Forces are measured in:

a)

Inertia

b)

Grams

c)

Tons

d)

Newtons

4.

The tendency for an object's motion to remain unchanged:

a)

Newton's 3rd Law

b)

Unbalanced Force

c)

Gravity

d)

Inertia

5.

The sum (total) of all forces acting on an object:

a)

Unbalanced Force

b)

Balanced Force

c)

Newtons

d)

Net Force

6.

The greater the mass of an object, the more force it will take to accelerate the object.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

7.

An object in motion will stay in motion until acted on by an unbalanced force. An object at rest will stay at rest until acted on by an unbalanced force.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

8.

For every action, there is an equal and opposite reaction

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

9.

The result of a push or pull on an object:

a)

Force

b)

Motion

c)

Inertia

d)

Speed

10.

Only one force can act on an object at a time.

a)

True

b)

False

11.

A force must be physically touching an object in order to act on it.

a)

True

b)

False

12.

A lamp sitting on a table is demonstrating Newton's ___ Law.

a)

1st

b)

2nd

c)

3rd

d)

4th

13.

A force that causes an object to slow down when it touches another object is _________.

a)

gravity

b)

friction

c)

inertia

d)

Newton

14.

Newton's 2nd Law says the acceleration of an object depends on its _______ and ______. (Choose two answers)

a)

force or applied force

b)

weight

c)

gravity

d)

mass

15.

if an object stays still or continues moving at the same speed and in the same direction, it is a _______ force.

a)

weak

b)

strong

c)

balanced

d)

unbalanced

16.

What will be the effect on the boy in the picture if the driver stops quickly?

a)

Because of inertia he will remain in the same position.

b)

He will be pushed back into the car seat.

c)

He will move from one side of the car seat to the other.

d)

He will move forward pressing against the seatbelt.

17.

Sitting at the top of a steep hill on a roller coaster (not moving), is an example of:

a)

Acceleration

b)

Inertia

c)

Speed

d)

Velocity

18.

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

a)

inertia

b)

weight

c)

acceleration

d)

direction

19.

The picture is an example of Newton's...

a)

1st Law

b)

2nd Law

c)

3rd Law

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.

A force exerted by a surface perpendicular to the surface.

a)

Normal

b)

Friction

c)

Gravity

d)

Tension

22.

A pulling force exerted along a rope, string, wire, cable...

a)

Friction

b)

Gravity

c)

Normal

d)

Tension

23.

The gravitational attraction between an object and the Earth.

a)

Friction

b)

Weight

c)

Normal

d)

Tension

24.

A swimmer pushes backward on the water in order to move forward. This is an example of Newton's ________ Law.

a)

1st

b)

2nd

c)

3rd

25.

A shopping cart accelerates more slowly when full. This is an example of Newton's ________ Law.

a)

1st

b)

2nd

c)

3rd

26.
How long will an object remain at rest, according to Newton's First Law of Motion?
a)
it can't rest
b)
until noon
c)
until an unbalanced force occurs
d)
as long as there are unbalanced forces acting on it 
27.
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
28.
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
29.
You are holding a bowl of hot soup while standing in the kitchen. As you begin to move, the soup spills out of the bowl. Upon reflection you realize that
a)
the soup spilled because of air resistance
b)
if you had traveled faster this wouldn't have happened
c)
the soup wanted to stay where it was, but you moved the bowl
d)
the soup and the bowl act as one body with the same velocity
30.
You pull a wagon with your younger sister in it. Which of these would accelerate the rate at which you can pull the wagon?
a)
pull the wagon with less force
b)
Pull the wagon with more force
c)
Have your sister push down on the wagon
d)
Put another of your siblings in the wagon
31.
A wheelbarrow is experiencing two forces. One is pushing 5N east and another 5N west. What is true about the motion of the wheelbarrow?
a)
it isn't moving
b)
it is accelerating
c)
it is slowing down
d)
its speed is constant
32.
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
33.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 
a)
feathers 
b)
iron
c)
same
d)
depends on their friction
34.

Inertia is proportional to the ______ of an object.

a)

Mass

b)

Weight

c)

Force

d)

Velocity

35.

What happens to the mass of an object if you double the force pushing on it?

a)

Mass will remain the same.

b)

Mass will double in magnitude

c)

Mass will decrease to 1/2 of its original.

d)

Mass will decrease to 1/4 of its original.

36.
Name the missing force...
a)
weight force
b)
normal force
c)
applied force
d)
frictional force
37.

Football A has a greater mass than football B. Which football will have greater acceleration when both are thrown with the same force in the same direction?

a)

Football A

b)

Football B

c)

They will have the same acceleration

d)

Mass has no effect on acceleration

38.

A box is placed on a table which rests on the floor. The box pushes on the table; the reaction force to the box's push on the table is the table's push on the floor.

a)

True

b)

False

39.

You are in a train traveling on a horizontal track and notice that a piece of luggage starts to slide directly toward the front of the train. From this observation, you can conclude that this train is

a)

speeding up.

b)

slowing down.

c)

changing direction.

d)

speeding up and changing direction.

e)

slowing down and changing direction.

40.

You push on box G that is next to box H, causing both boxes to slide along the floor, as shown in the figure. The reaction force to your push is

a)

the push of box G on box H.

b)

the push of box H on box G.

c)

the push of box G against you.

d)

the upward force of the floor n box G.

e)

the acceleration of box G.

41.
An object with a mass of 5.0 kg accelerates 8.0 m/s2 when an unknown force is applied to it. What is the amount of the force?
a)
40 N
b)
4 N
c)
10 N
d)
0.1 N
42.

An object accelerates 2 m/s2 when a force of 12 newtons is applied to it. What is the mass of the object?

a)

24 kg

b)

20 kg

c)

5 kg

d)

6 kg

43.

An object with a mass of 5 kg has a force of 40 newtons applied to it. What is the resulting acceleration of the object?

a)

2 m/s2

b)

8 m/s2

c)

0.5 m/s2

d)

6 m/s2

44.

An object with a mass of 5 kg has a force of 20 newtons applied to it. What is the resulting acceleration of the object?

a)

2 m/s2

b)

8 m/s2

c)

4 m/s2

d)

6 m/s2

45.
The net force acting on an accelerating object is suddenly halved. This will cause the acceleration of the object to 
a)
double
b)
be halved
c)
remain unchanged
46.
The net force acting on an accelerating object is suddenly tripled. This will cause the acceleration of the object to 
a)
triple
b)
become one-third of the original
c)
remain unchanged
47.
Both the mass and the net force of an accelerating object are suddenly halved. This will cause the acceleration of the object to 
a)
double
b)
be halved
c)
remain unchanged
48.
Both the mass and the net force of an accelerating object are suddenly tripled. This will cause the acceleration of the object to 
a)
triple
b)
become one-third of the original
c)
remain unchanged
49.
An object is accelerating at a rate of 10.0 m/s2. If the net force acting upon the object is suddenly doubled, what would be the object’s new acceleration?
a)
5.0 m/s2
b)
15.0 m/s2
c)
20.0 m/s2
d)
25.0 m/s2
50.
An object is accelerating at a rate of 10.0 m/s2. If the mass of the object is suddenly doubled and the net force is quadrupled, what would be the object’s new acceleration?
a)
5.00 m/s2
b)
10.0 m/s2
c)
15.0 m/s2
d)
20.0 m/s2

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