Quiz about Newton's 3rd Law Practice

Question 1

What is Newton's Third Law also known as?

Accepted Answer

The Law of Action-Reaction

Answer

The Law of Acceleration

Answer

The Law of Inertia

Question 2

When an action force occurs, there is always a reaction force. Which of the following TWO terms describe the reaction force?

Accepted Answer

opposite

Accepted Answer

equal

Answer

stronger

Answer

downward

Answer

weaker

Question 3

When a baseball player catches a ball, the ball pushes towards the glove; this is the action force. What is the reaction force?

Accepted Answer

The reaction force is the glove pushing back on the ball with an equal force.

Answer

The reaction force is the glove pushing back on the ball with a stronger force.

Answer

The reaction force is the glove pulling back on the ball with an equal force.

Answer

The reaction force is the ball pushing away from the glove with an equal force.

Question 4

When a baseball bat hits a baseball, how does the force of the baseball hitting the bat compare to the force of the bat hitting the baseball?

Accepted Answer

The bat hitting the ball is equal to the force of the ball hitting the bat

Answer

The bat hitting the ball is a greater force than the ball hitting the bat

Answer

The bat hitting the ball is a weaker force than the ball hitting the bat

Answer

The bat hitting the ball is the only force in this situation

Question 5

A _______ is a push or a pull that acts on an object as a result of its interaction with another object.

Accepted Answer

force

Answer

action

Answer

acceleration

Answer

momentum

Question 6

What is a force?

Accepted Answer

a push or a pull

Answer

something that always causes motion

Answer

a type of acceleration

Answer

a current

Question 7

If the person is pushing backwards with the paddle, why do they move forward?

Accepted Answer

The water pushes back with an equal and opposite force

Answer

The person will actually move backwards, they need to paddle the other way

Answer

The person is pushing harder than the water

Answer

The water pushes back with a greater force than the person

Question 8

If a person pushes down on a trampoline, why do they move back up into the air?

Accepted Answer

The trampoline pushes back with an equal and opposite force as the person

Answer

The trampoline pushes back with a greater force than the person

Answer

The trampoline pushes back with less force than the person

Question 9

How is this an example of Newton's 3rd Law?

Accepted Answer

Both the ball and the head are exerting equal force on each other

Answer

Only his head is pushing on the ball

Answer

Only the ball is pushing on his head

Question 10

When the person pushes on the wall, and the wall pushes back, why does the person move and not the wall?

Accepted Answer

The wall has more mass

Answer

The person is pushing harder than the wall

Answer

The wall is pushing harder than the person

Answer

The skateboard is pushing on the person

Question 11

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

Accepted Answer

True

Answer

False

Question 12

A book rests on a table. The force of gravity pulls down on the book with a force of 20N. What prevents the book from falling down into the ground?

Accepted Answer

The table pushes back up on the book with an equal and opposite force of 20N

Answer

The table and the book are pushing back with an acceleration of 9.8m/s².

Answer

The table pushes back up on the book with a force greater than 20N

Answer

The inertia of the book is equal to the inertia of gravity

Question 13

A bus hits a bug and the bug splatters on the windshield, which force is greater?

Accepted Answer

They're the same

Answer

The Bus

Answer

The Bug

Answer

Gravity acting on the bus

Question 14

When Ronda Rousey got kicked in the face, what are the action and reaction forces?

Accepted Answer

The foot pushing on face and face pushing on foot

Answer

Ronda Rousey and media criticism

Answer

The foot pushing on the air and air on foot

Answer

Ronda Rousey pushing on the floor and floor on Rhonda Rousey

Question 15

Force always comes in________

Accepted Answer

pairs

Answer

waves

Answer

triplets

Question 16

The two paired forces in Newton's third law:

Accepted Answer

all of the above

Answer

act on different objects

Answer

are equal in size

Answer

are opposite in direction

Answer

are the same type

Question 17

When a hammer exerts a force on the nail, the nail _________________________________________.

Accepted Answer

exerts the same amount of force back onto the hammer

Answer

exerts a smaller amount of force back onto the hammer

Answer

exerts a larger amount of force back onto the hammer

Answer

cries and cries and cries

Question 18

A book pushes down on a table with a force of 5N, the table..

Accepted Answer

Pushes back with a force of 5N

Answer

Pushes back with a force less than 5N

Answer

Pushes back with a force greater than 5N

Answer

Does nothing. A table has no force.

Question 19

The larger the mass you have the _____ force you need to change its motion.

Accepted Answer

more

Answer

less

Question 20

Arrows are often used to show the strength and direction of forces. Which of the following pairs of arrows shows equal and opposite forces?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 21

When a cannon fires a cannonball, we can observe Newton's 3rd Law. Which is the reaction force?

Accepted Answer

The cannon moving backward

Answer

The cannon moving forward

Answer

The cannonball moving backward

Answer

The cannonball moving forward

Question 22

Action-reaction forces can cause a change in motion.

Accepted Answer

True

Answer

False

Question 23

Action-reaction forces never cancel each other out because....

Accepted Answer

they act on different objects

Answer

they act on the same object

Answer

they do not act on objects

Question 24

What is the reaction force in this picture?

Accepted Answer

Balloon moving forward

Answer

air releasing from one end of the balloon

Answer

gravity

Answer

friction

Question 25

When the person pushes the ground with their foot, the equal and opposite reaction force is

Accepted Answer

the ground pushing back on their foot

Answer

when they start to move forward

Question 26

A swimmer pushes off the walls of a pool with a force of 75N. How much force is the wall pushing back onto the swimmer?

Accepted Answer

75N

Answer

0N

Answer

150N

Question 27

What is Newton's Third Law of Motion?

Accepted Answer

For each action there is an equal and opposite reaction

Answer

Objects in motion stay in motion and objects at rest stay at rest

Answer

Force is equal to mass times acceleration

Question 28

What is an opposing force?

Accepted Answer

A force in an opposite direction with same strength.

Answer

A force in the same direction with same strength.

Question 29

If you pushing on the ball is the action, what is the reaction?

Accepted Answer

the ball pushing back

Answer

the ball moving forward

Question 30

The nozzle of a rocket is pointed downward so that as fuel is ignited, the exhaust pushes downward. Why is this arrangement necessary for a rocket to function properly?

Accepted Answer

As fuel is combusted, the rocket pushes the gases backward and the gases push the rocket forward.

Answer

The rocket is protected from the heat of the exhaust.

Answer

Burned fuel can be collected on the ground.

Answer

This allows the rocket to be steered properly.

Question 31

When a heavy football player and a light one run into each other, who exerts more force

Accepted Answer

Their force are equal

Answer

The light one

Answer

The heavy one

Question 32

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

Accepted Answer

For every action there is an equal and opposite reaction.

Answer

Every mass exerts a force on every other mass.

Answer

An object at rest tends to stay at rest.

Answer

Friction opposes the motion of an object.

Question 33

Which color vector would be the reaction force from the foot to the ball being kicked?

Accepted Answer

purple

Answer

blue

Answer

black

Answer

red

Question 34

Magnets, electricity and _______ are all non-contact force examples.

Accepted Answer

gravity

Answer

oil

Question 35

A contact force is from

Accepted Answer

objects physically touching

Answer

far apart objects

Answer

not touching object

Answer

always a pull

Question 36

A non-contact force is between

Accepted Answer

two objects that aren't touching

Answer

two objects that are touching

Answer

the ground and wheels

Answer

you and me

Question 37

The three examples pictured are of

Accepted Answer

Contact Forces

Answer

Non-contact Forces

Question 38

The force between the phone and the mount is a

Accepted Answer

non-contact force

Answer

contact force

Question 39

Gravity is a

Accepted Answer

Non-contact Force

Answer

Contact Force

Answer

Myth

Question 40

Magnetism is a...

Accepted Answer

Non-Contact Force

Answer

Contact Force

Newton's 3rd Law Practice

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