Newton's Third Law Review

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

• unequal and opposite

• equal and similar

• stronger and opposite

• equal and opposite

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

• False

• True

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

Force always come in________

• waves

• triplets

• pairs

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.

What happens to the balloon if the air is released ?

• Balloon goes right

• Balloon goes up

• Balloon goes down

• Balloon goes left

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

• Pushes back with a force of 5N

• Pushes back with a force less than 5N

• Pushes back with a forcec greater than 5N

• Does nothing. A table has no force.

According to Newton’s Third Law, when you lean on a wall, which force is greater?

• Wall's foce

• Your force

• Wall's friction

• They are equal

When a cannon fires a cannonball we observe the action of the cannonball pushing forwards off of the cannon. Which is the reaction force?

• The cannon pushing up on the ground

• The cannon pushing backwards off of the cannonball

• The cannonball pulling backwards

• The cannonball falling forward

This picture shows .............

• Newton 2nd law of motion

• Newton 3rd law of motion

• Newton 1st law of motion

• I don't know