Kinetic energy is the energy of motion. It is found in objects that are moving, such as cars, flowing water, or moving air. Any object in motion has kinetic energy. This type of energy is part of many systems.

Kinetic energy is observed in natural and mechanical systems around the world. It is measured in units such as joules. Examples include wind, rivers, and moving machines.

Kinetic energy occurs in everyday movement and activities. It is part of how energy is described in science. This form of energy is present whenever motion takes place.