Force, Work, Energy and Simple Machines

Friction is a force that ______ against an object to slow its motion.

• pushes

• pulls

What is position?

• The movement of an object.

• The location of an object.

What is motion?

• A change in position.

• A change in force.

When your position changes, you're in ____________.

• motion

• force

Which of these are examples of motion?

• Turning around

• Moving side to side

• Traveling

• All of them

What is speed?

• A measure of how fast something moves.

• A measure of how you move.

A push moves things _______ .

• Close to you

• Away from you

A pull moves things _______ .

• Close to you

• Away from you

When you pick things up, you're _______.

• pushing

• pulling

Which requires more force to move it?

• A heavy object, like a bowling ball.

• A light object, like a tennis ball