Topic 3 Lesson 1 8th Grade

Front

Motion

Back

When an object's position changes when compared to another object.

Front

Reference Point

Back

A place or object used for comparison to determine whether something is in motion.

Front

Force

Back

A push or a pull on an object.

Front

Newton

Back

The unit of measurement for force.

Front

Gravity

Back

A force that pulls objects toward each other as a result of their masses.

Front

Friction

Back

A contact force that opposes motion.

Front

Net force

Back

The total amount of forces acting on an object.