PS.5.2.1 — Force and Motion

Front

What can a force do to an object?

Back

A force can cause an object to start moving, stop, change speed, or change direction.

Front

What is a force?

Back

A push or a pull on an object.

Front

How does gravity affect motion?

Back

Gravity pulls objects toward Earth and can change their speed and direction.

Front

How does friction affect motion?

Back

Friction slows down or stops motion when two surfaces rub against each other.

Front

What happens when mass increases but the force stays the same?

Back

The object moves slower—the same force has less effect on a heavier object.

Front

What happens when you apply a greater force to an object?

Back

It causes a greater change in the object’s motion (more speed or faster change in direction).

Front

Give an example of friction in the real world.

Back

A soccer ball slowing down on grass because of the surface resistance.