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Newton's Laws and Forces Test

Total questions: 65

Worksheet time: 3590secs

Name
Class
Date
1.

Which has more Inertia? (so needs more force to move)

a)

Truck

b)

Ant

c)

A cat

d)

A skateboard

2.
An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?
a)
slowing motion in a straight line
b)
accelerating motion in a straight line
c)
constant motion in a straight line
d)
constant motion in an unpredictable direction
3.
What can a force do?
a)
all of the above
b)
start a motion
c)
stop a motion
d)
change the direction of the motion
4.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
d)
Density
5.
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 
6.
After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving. 
7.
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
8.
Objects with greater _________ also have greater inertia.
a)
speed
b)
mass
c)
temperature
d)
friction
9.

Because of inertia, a moving object will keep ________ unless acted on by an unbalanced force.

a)

at rest

b)

moving

c)

in one spot

d)

inertia

10.
Because of inertia, a resting object will remain at ________.
a)
rest
b)
a constant speed
c)
school
d)
inertia 
11.
You push on a car and it does not move.  What is true about the inertia?
a)
The inertia is changing
b)
The inertia of the car is too great 
c)
The inertia of the person is equal to the car
d)
There is not inertia because of no movement
12.
Why is the net force 0 in the image?
a)
Because the elephants are the same size
b)
Because they are both pulling the same amount of force in opposite directions
c)
Because they are elephants
d)
Because they are pulling away from each other.
13.

Find the net force: 15 N to the right, and another 15 N to the right.

a)

0 N Right

b)

0 N Left

c)

30 N Left

d)

30 N Right

14.

You and your friend, are playing tug of war. Your friend pulls with a force of 55 N to the right. You pull with a force of 65 N to the left. What is the net force on the rope?

a)

10 N, to the left

b)

20 N

c)

10 N, to the left

d)

10 N, to the right

15.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass. 
a)
velocity
b)
gravity
c)
net force
d)
distance
16.

Which explains why the tablecloth trick works?

a)

The dishes are stuck in place due to air resistance.

b)

The tablecloth is an ilusion.

c)

The dishes have inertia, and therefore stay on the table.

d)

magic

17.
What happens when unbalanced forces act on an object at rest?
a)
the object remains at rest
b)
the object begins moving in an unpredictable direction
c)
the object begins moving in the direction of the net force
d)
the object begins moving opposite to the direction of net force
18.

Calculate the net force?

a)

40 N left

b)

0 N Balalnced

c)

400 N right

d)

40 N right

19.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Force
d)
Don't know
20.

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

21.
Will it take more force to push an empty shopping cart or a shopping cart that is full?
a)
The empty shopping cart
b)
The full shopping cart
c)
They will take the same amount of force
22.
Why would one ball accelerate more than the other when pushed with the same amount of force?
a)
Different weights
b)
Different forces
c)
Different masses
d)
Different sizes
23.

According to Newton's second Law, which would take more force to slow down?

a)

The silver car

b)

The green car

c)

They would both take the same force

24.

Which of these best states Newton's Second Law?

a)

The greater the mass of an object the greater the force needed to change its motion.

b)

The greater the mass of an object the less force needed to change its motion.

c)

The mass of an object does not effect the force needed to change its motion

25.

If a constant force is applied to an object that has increasing mass, what what will happen to the acceleration of that object?

a)

it will increase

b)

it will decrease

26.

Newton's 2nd law states a decrease in mass of an object will cause the the acceleration to _____ only if _______

a)

increase, the force is constant

b)

decrease, the force is constant

c)

increase, the mass is constant

d)

decrease, the mass is constant

27.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
28.

Why would one object have a greater acceleration than another when pushed with the same amount of force?

a)

The objects have different weights.

b)

The objects have different forces.

c)

The objects have different masses.

d)

The objects are different sizes.

29.

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

a)

inertia

b)

weight

c)

acceleration

d)

direction

30.

If I apply the same force to a ping pong ball and a bowling ball, which one will accelerate farther and faster?

a)

ping pong ball

b)

bowling ball

c)

I have no idea

31.
If you increase the force on an object, its acceleration
a)
decreases
b)
stays the same
c)
also increases
d)
stops
32.
If you increase the mass on an object, its acceleration
a)
decreases
b)
stays the same
c)
also increases
d)
stops
33.

If equal forces are applied to two objects one with a mass of 35g and the other with a mass of 40g, which object is going to accelerate the most?

a)

the 35g object

b)

the 40g object

c)

they will accelerate the same amount

d)

neither object will accelerate

34.

Which Law? "For every action, there is an equal and opposite reaction."

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Newton's 4th Law

35.
Any push or pull on an object.
a)
force
b)
velocity 
c)
inertia
d)
momentum
36.
The force that opposes motion between two surfaces in contact with each other.
a)
inertia
b)
friction
c)
momentum
d)
gravity
37.
Which law applies?
a)
1st
b)
2nd
c)
3rd
38.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Mass
d)
Kilograms
39.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
40.
What is the net force on the block? (click on the words to view the picture)
a)
5 Newtons up
b)
5 Newtons down
c)
15 Newtons up
d)
15 Newtons down
41.
Which of the following objects has the least acceleration?
a)
a. an empty shopping cart pushed with a hard force
b)
b. a full shopping cart pushed with a hard force
c)
c. an empty shopping cart pushed with a light force
d)
d. a full shopping cart pushed with a light force
42.
The sum of all forces acting on an object.
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
43.
Calculate the Net Force. 
a)
60N, Left 
b)
40N, Right 
c)
0N
d)
60N, Right
44.

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

45.

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

a)

1st Law

b)

2nd Law

c)

3rd Law

46.

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

a)

Law of Acceleration

b)

Law of Inertia

c)

Law of Action / Reaction

47.

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

48.

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

49.

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

50.

Forces come in pairs

a)

Newton's 1st law

b)

Newton's 2nd law

c)

Newton's 3rd law

d)

Law of conservation of momentum

51.

A balanced force means that an object is

a)

has a net force greater than zero

b)

changing its motion

c)

will have no change in motion

d)

none of the above

52.
What is the tendency of an object to resist a change in motion?
a)
coffee
b)
motion
c)
inertia
d)
gravity
53.

Action and reaction forces acting in opposite directions don't cancel out because they are acting on different _________.

a)

masses

b)

Objects

c)

Angles

d)

Forces

54.
If you sit on a chair, the chair pushes up with a ________ force
a)
stronger
b)
weaker
c)
equal 
55.
Less mass in an object means _________ inertia
a)
less
b)
more 
c)
equal
56.
Force = Mass x Acceleration
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
57.
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. 
58.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
59.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
60.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
61.

You push a box 35 N to the right. Your friend pushes the box 25 N in the same direction. What is the net force?

a)

60 N balanced to the right

b)

60 N unbalanced to the right

c)

10 N balanced to the right

d)

10 N unbalanced to the right

62.

If a car is traveling faster and faster down a hill, you can be sure that-

a)

only gravity is acting on the car

b)

there is no friction acting on the car

c)

the net force on the car is 0

d)

unbalanced forces are acting on the object

63.

If you are pushing a chair 50 N toward your friend and your friend is pulling the chair in the opposite direction, what is the net force?

a)

net force of 0

b)

100 N towards you

c)

100 N towards your friend

d)

10 N towards you and your friend

64.

What is the net force?

a)

900 N unbalanced right

b)

900 N balanced right

c)

0 balanced

d)

0 unbalanced

65.

Mr. Devers pushes a box 25 to the right then he pushes the box another 30 to the right, what is the net force?

a)

5 N balanced left

b)

55 N unbalanced right

c)

55 N balanced right

d)

5 N unbalanced right

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