Newton's 3rd Law of Motion

Newton's 3rd Law of Motion

Multiple Choice

Newton’s law states that for every action, there is an ________ reaction.

• unequal and opposite

• equal and similar

• stronger and opposite

• equal and opposite

Multiple Choice

Force always come in________

• waves

• triplets

• pairs

Multiple Choice

How is this an example of Newton’s Third law?

• Only the ball is using the head

• They are both exerting an equal force on each other

• Only the head is pushing the ball

Multiple Choice

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

• False

• True

Action-Reaction Force with the Wall

Action: The person pushes the wall

Reaction: The wall pushes the person

Open Ended

David pushes the wall to the left with his finger. The wall pushes David to the right. What is the action force and what is the reaction force?

Action-Reaction in a Balloon

Action: Air rushes down

Reaction: Balloon Goes Up

Open Ended

When a rocket ship takes off the exhaust pushes down on the ground and ground pushes back on the rocket. What is the action force and the reaction force?

Multiple Choice

What happens to the balloon if the air is released ?

• Balloon goes right

• Balloon goes up

• Balloon goes down

• Balloon goes left

Action Reaction Skate Board

Action: The Person Pushes the Ground Backward

Reaction: The Ground Pushes him Forward

Open Ended

Brian is on his skateboard and pedals backwards so that he can move forward. What's the action force?

Multiple Choice

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

• the ground pushing back on their foot

• when they start to move forward

Action Reaction Tennis Ball

Action: The tennis ball pushes the ground down

Reaction: The ground pushes the tennis ball up

Multiple Choice

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?

• For every action there is an equal and opposite reaction.
• Every mass exerts a force on every other mass.
• An object at rest tends to stay at rest.
• Friction opposes the motion of an object.

Multiple Choice

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

• The cannon moving forward

• The cannon moving backwards

• The cannonball moving backwards

• The cannonball moving forward

Multiple Choice

What is not an example of Newton's Third Law?

• Two people pushing against each other with the same force and in opposite directions

• You have to push a heavy ball harder to move as fast as a smaller one

• When you sit on a chair, your body acts as a force on the chair, and the chair acts as another force holding your body up

Multiple Choice

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?

• For every action there is an equal and opposite reaction.

• Every mass exerts a force on every other mass.

• An object at rest tends to stay at rest.

• Friction opposes the motion of an object.

Multiple Choice

You hit a wall with a stick. The equal but opposite reaction is _____

• the wall pushes against you

• the stick pushes against you

• you push against the stick

• the wall pushes against the stick

Multiple Choice

A book rests on a table.  The force of gravity pulls down on the book with a force of 20 newtons. What prevents the books from accelerating downward ?   

• The table presses back up on the book with an equal and opposite force of 20 newtons.
• The table presses back up on the book with a force greater than 20 newtons.
• The table and the book together are accelerating downwards at  9.8 m/sec²
• The inertia of the book holds it up

Multiple Choice

Newton's third law states that any action will have a(n) _______ and ______ reaction

• Equal and similar
• Equal and opposite
• Equal and different
• Greater and opposite

Multiple Choice

When Ronda Rousey got kicked in the face, What is the interaction pair?

• The foot and the face
• Ronda Rousey and media criticism 
• The foot and the air flow
• Ronda Rousey and the floor

Multiple Choice

A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction force is...

• The grip of the player's hands on the ball

• the air resistance of the ball

• the force of the ball against the bat

Multiple Choice

A player throws a ball. The action force is the player impact on the ball. The reaction force is...

• The force of the ball impact on the player

• The force of the grip of the ball

• The celebration the player is thinking of