Forces and Motion

Front

What is force?

Back

A push or pull on an object.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is mass?

Back

The amount of matter in an object, usually measured in grams or kilograms.

Front

How does mass affect motion?

Back

The greater the mass, the less effect a force will have on the object's motion.

Front

What is friction?

Back

A force that opposes the motion of an object when it comes into contact with another object.

Front

What is magnetism?

Back

A noncontact force that attracts certain metals.

Front

What happens when two forces are equal and opposite?

Back

The object does not move.

Front

What is gravity?

Back

A force that pulls objects toward each other, such as the Earth pulling us down.

Front

What is a balanced force?

Back

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

Front

What is an unbalanced force?

Back

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