Force and Motion Vocabulary

An object's resistance to any change in motion.

• friction

• inertia

• velocity

• gravity

The speed and direction of an object.

• speed

• force

• acceleration

• velocity

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A force that slows down an object when it rubs against another object.

• inertia

• motion

• force

• friction

Changing the location of an object from one place to another.

• motion

• velocity

• acceleration

• movement

The natural force that pulls objects toward the earth.

• inertia

• pull

• force

• gravity

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A push or a pull on an object causing it to move, stop, or change direction.

• force

• movement

• friction

• velocity

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An object made up of few parts that helps people use force with less effort.

• machines

• tools

• simple machines

• gravity

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Which one is NOT one of Newton's three laws of motion?

• Forces can slow down, speed up, or change the direction of an object.

• If o ne force acts on an object, an opposite force will push back.

• Objects have stored up energy waiting to be released.

• Objects need force to move or stay still.

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Which one is NOT a simple machine?

• an ax

• pulley

• lever

• wheel and axle

Which one is NOT a simple machine?

• screw

• wedge

• a car jack

• incline plane