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Review Newtons 3 Laws Quiz

Total questions: 60

Worksheet time: 2hrs 3mins

Name
Class
Date
1.

Newton's first law is also called the law of ______?

a)

Gravity

b)

Forces

c)

Unbalanced Forces

d)

Inertia

2.

An object at rest will remain at rest unless what happens?

a)

An unbalanced force acts on the object

b)

A balanced force acts on the object

c)

It will always remain at rest

3.

The moon has less gravity than Earth. If you were on the moon, how would your weight be different than it is on Earth?

a)

It would be the same

b)

It would be more

c)

It would be less

4.

What is the equation for Weight/Force?

a)

Mass=Force x Acceleration

b)

Force=Mass x Acceleration

c)

Speed=Distance / Time

d)

Acceleration=Force x Mass

5.

What is the SI unit for weight?

a)

Kilograms (Kg)

b)

Miles per Hour (mph)

c)

Millimeters (mm)

d)

Newtons (N)

6.

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

7.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
8.
Newton's second law is applied as the formula _____
a)
Force = Mass X Acceleration
b)
Speed = distance / time
c)
a + b = c
d)
huh?
9.
____ is the rubbing force that acts against motion between two touching surfaces.
a)
Acceleration
b)
Normal force
c)
Momentum
d)
Friction
10.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 3rd Law
11.
According to Newton's Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because
a)
the force sent the person forward, there is an equal force pushing back on the skateboard
b)
the pull of gravity on the person is the same as on the skateboard, regardless of size
c)
the air resistane on the person is great and the friction on the skateboard is small
d)
the mass of the skateboard is the same as the mass of the person jumping off
12.
Which has more Inertia? (so need more force to move) 
a)
Truck
b)
Ant
c)
A cat
d)
A skateboard
13.

Check off all the boxes that appy for Newtons 3rd law.

a)

An object in motion continues in motion with the same speed unless acted upon an unbalanced force.

b)

The force that is acting on an object is equal to the mass of the object times its acceleration

c)

For every action, there is an equal and opposite reaction

d)

An object at rest will remain at rest unless acted upon unbalanced force

14.

A swimmer pushed off a wall using her legs. What is this an example of?

a)

Newtons First Law

b)

Newtons Second Law

c)

Newtons Third Law

15.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
16.
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)
17.
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 
18.
A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia?
a)
 m = 3.0 kg
b)
m = 4.0 kg 
c)
m = 3.0 ml 
d)
m = 30.0 g
19.
Determine the accelerations that result when a 12-N net force is applied to a 3-kg object. 
a)
3 m/s
b)
4 ft/s 
c)
13 m/s
d)
4 m/s 
20.
If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
21.
The force that opposes motion between two surfaces in contact with each other.
a)
inertia
b)
friction
c)
momentum
d)
gravity
22.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
23.
A 260.5N unbalanced force applied to push a chair across the room causing an acceleration of 4.2 m/s2. What is the mass of the chair?
a)
62.02 kg
b)
63.69 kg
c)
263.3 kg
d)
1123.5 kg
24.

What are the three important things you need to know about Newtons Laws of Motion?

a)

Force of an object is equal to its mass times acceleration

b)

when two objects Interact, they apply forces to each other of equal magnitude and opposite reaction.

c)

An object will not change its motion unless acted on by an outside force

d)

Mrs Walgamott

25.

Choose the correct unit for: Force (F)

a)

45 s

b)

76 m

c)

37 m/s2

d)

5 N

26.

Choose the correct unit for: mass (m)

a)

5 N

b)

2.2 kg

c)

15 m/s

d)

76 m

27.

Choose the correct unit for: acceleration (a)

a)

5 N

b)

2.2 kg

c)

37 m/s2

d)

15 m/s

28.

Which of the following represents Newton’s 1st Law (the Law of Inertia)?

a)

A ball rolling on a flat surface coming to a stop.

b)

When a car brakes suddenly, the passengers press forward against their seat belts.

c)

Eating food at a table.

d)

Running and stopping at the finish line.

29.

When a pair of balanced forces acts on an object, the net force that results is

a)

greater in size than both forces combined.

b)

equal in size to one of the forces.

c)

greater in size than one of the forces. 

d)

 equal to zero.

30.

When an unbalanced force acts on an object,

a)

the object’s motion does not change.

b)

the mass of the object changes.

c)

the object accelerates.

d)

the inertia of the object increases.

31.

Newton’s first law of motion states that if a moving object is acted on by balanced forces, it will

a)

remain in motion at a constant velocity

b)

change its momentum.

c)

eventually come to a stop.

d)

accelerate.

32.

Luna the Cat is visiting Thor, Dog of Thunder, on his home planet of Asgard. The gravity on Asgard is 3.2 m/s2 and her mass is only 6 kg. What is her weight on Asgard?

a)

9.2 N

b)

2 N

c)

19.2 N

d)

0.8 N

33.

An apple falls from a tree. If air resistance is negligible, the force due to gravity on the apple

a)

causes the apple to fall with a constant velocity.

b)

causes the apple to accelerate toward the ground at 10 m/s/s.

c)

causes the apple to rot.

34.

The force that makes a car accelerate is

a)

due to the car's engine.

b)

the force on the car due to the engine.

c)

combustion force.

d)

the force that the road exerts on the car.

35.

A car and a truck collide head-on. The force on the truck due to the car

a)

is less than the force on the car due to the truck.

b)

is greater than the force on the car due to the truck.

c)

is equal to the force on the car due to the truck.

d)

causes the truck to a larger acceleration than the car.

36.

The electric force that the electron exerts on the proton of a hydrogen atom is

a)

less than the electric force that the proton exerts on the electron of the hydrogen atom.

b)

greater than the electric force that the proton exerts on the electron of the hydrogen atom.

c)

equal to the electric force that the proton exerts back on the electron of the hydrogen atom.

d)

None of the above.

37.

Newton showed that to change the direction in which an object is moving, one needs to apply:

a)

a force

b)

an orbit

c)

an inertia

d)

a perigee

e)

a bribe

38.

An object at rest will remain at rest, and an object in motion will remain in motion, unless acted upon by an unbalanced force.

a)

Law of Inertia

b)

Law of Acceleration

c)

Law of Action - Reaction

39.
Name the missing force....
a)
weight force
b)
normal force
c)
frictional force
d)
tension force
40.
Name the missing force...
a)
applied force
b)
weight force
c)
lift
d)
normal force
41.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
42.
Name the missing force...
a)
weight force
b)
normal force
c)
applied force
d)
frictional force
43.
Name the missing force...
a)
tension force
b)
frictional force
c)
normal force
d)
spring force
44.

The force exerted by ropes and chains is called

a)

tension

b)

normal

c)

elastic

d)

mechanical

45.

Paired forces are

a)

in opposite directions

b)

always equal

c)

not possible

d)

added together

46.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

47.

Which of the following is true about this free-body diagram?

a)

the forces are are balanced

b)

the object is free-falling

c)

the object is moving upward

d)

the forces are unbalanced

48.

Force is a vector. Vectors have both _____ and direction.

a)

velocity

b)

displacement

c)

magnitude

d)

gravity

49.

Which of the following forces acts against the motion of an object? (NOTE: there are two correct answers to this question.)

a)

Air resistance (Drag)

b)

Normal force

c)

Imaginary Force

d)

Friction force

e)

Magnitude

50.

In the diagram shown here, the net force is _____.

a)

0 N

b)

10 N, upward

c)

10 N, to the left

d)

10 N, to the right

51.

Which quantity remains the same no matter where you are?

a)

Weight force

b)

Mass

c)

Gravity

d)

None of these

52.

Thomas is pushing a shopping cart with a certain mass at an acceleration. According to Newton's second law of motion, what is the equation that relates the force Thomas applies, the mass of the cart, and the acceleration of the cart?

a)

F=m+aF = m + a

b)

F=maF = \frac{m}{a}

c)

F=maF = ma

d)

F=amF = \frac{a}{m}

53.
Calculate the net force acting upon the object.
a)
10 N north
b)
10 N south
c)
14.1 N east
d)
0 N
54.
Calculate the net force acting upon the object.
a)
10 N east
b)
0 N
c)
14.1 N east
d)
20 N north
55.

Calculate the net force acting upon the object.

a)

10N, north

b)

20N, south

c)

10N, south

d)

22.4N, north

56.

What is the net force of the block?

a)

8N, right

b)

2N, right

c)

8N, left

d)

2N, left

57.
The free body diagram displayed shows
a)
A rightward gravitational force of100N
b)
A downward gravitational force of 100N
c)
A leftward gravitational force of 100N
d)
An upward gravitational force of 400N
58.

Determine the net force and direction of motion:

a)

16 N Right

b)

16 N Left

c)

0 N not moving

d)

0 N left

59.
Name the missing force...
a)
applied force
b)
weight force
c)
tension force
d)
drag
60.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

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