Force and Motion

Front

What is Force?

Back

A push or pull on an object that can cause it to move, stop, or change direction.

Front

What is Motion?

Back

The change in position of an object over time.

Front

What is Balanced Force?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What is Unbalanced Force?

Back

Forces that are not equal, causing a change in motion.

Front

What is Speed?

Back

The distance traveled per unit of time, usually measured in miles per hour (mph) or meters per second (m/s).

Front

How do you calculate Speed?

Back

Speed = Distance ÷ Time.

Front

What happens to a ball in a moving wagon when the wagon stops suddenly?

Back

The ball will roll forward in the wagon and may fall off.

Front

What is an example of a balanced force?

Back

A book sitting on a desk.

Front

What is an example of an unbalanced force?

Back

Pushing a book off a desk.

Front

What is Friction?

Back

A force that opposes motion between two surfaces in contact.