Kinetic energy is energy associated with motion.
Moving air, water, people, vehicles, and marbles all have kinetic energy. Click here to find out more about energy. Motion Change and motion go hand in hand. Practically all of the changes we see in the world about us are the result of motion. Change from day to night results from the earth rotating on its axis, change from a calm day to one that is windy results from moving air, and the change of a marble's location results from the marble rolling down the ramp and across a floor.