Front

Equal forces

Back

Two or more forces that act on an object in different directions with the same size strength; result in no change in position, direction, or motion.

Front

Force

Back

A push or pull on an object; forces have both strength and direction.

Front

Friction

Back

A force that acts in the opposite direction to movement.

Front

Gravity

Back

A pulling force; on Earth, gravity pulls objects down closer to the Earth's surface.

Front

Magnetism

Back

A force that pulls magnetic material across a distance.

Front

Mechanical energy

Back

Energy of motion.

Front

Unequal forces

Back

Forces that are acting on an object in different directions and are not the same strength; result in a change in position, direction, or motion.