Forces and Energy Lesson 2 Review

Front

What is force?

Back

A push or pull on an object that can cause it to change its motion.

Front

What is energy?

Back

The ability to do work or cause change.

Front

What is Newton's Third Law of Motion?

Back

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

Front

What is an action-reaction force pair?

Back

Two forces that are equal in size, but opposite in direction, acting on two different objects.

Front

What happens when two objects push against each other?

Back

They apply equal forces to each other and can move backwards.

Front

What is the reaction force when a foot pushes down on the floor?

Back

The floor pushes back against the foot.

Front

How do we represent forces in diagrams?

Back

With arrows that show the direction and magnitude of the force.

Front

What is the significance of the length of an arrow in a force diagram?

Back

The length of the arrow represents the magnitude of the force.

Front

What is air resistance?

Back

A force that opposes the motion of an object through the air.

Front

What is an example of a force pair in everyday life?

Back

An archer pulling back on a bowstring and the bowstring pushing forward on the arrow.