Forces and Motion

Front

Friction

Back

The force opposing motion due to surfaces rubbing against each other.

Front

Sliding Friction

Back

Occurs when a solid surface slides over another.

Front

Rolling Friction

Back

Occurs when an object rolls over a surface.

Front

Fluid Friction

Back

Occurs when an object moves through a fluid.

Front

Gravity

Back

Force that pulls objects towards each other.

Front

Weight

Back

The force of gravity on an object at the surface of a planet.

Front

Air Resistance

Back

Occurs when an object falls or goes through air.

Front

Free Fall

Back

The motion of a falling object when the only force acting on it is gravity.