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# How is kinetic energy used?

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Kinetic energy is used by exploiting the motion of an object. For example, the energy of a moving piston in an automotive engine provides transportation. The kinetic energy of moving water powers hydroelectric dams that provide electricity.

## Keep Learning

There are many uses of kinetic energy in sports. A pitcher transfers the kinetic energy of his pitching arm to a baseball. A batter uses the kinetic energy of a swinging bat to amplify the energy in a pitched ball to get on base or score a run. Similarly, a tennis player swings a racket to amplify the kinetic energy of a tennis ball.

Creating electricity through the motion of wind is another example of how kinetic energy is used. Wind turbines change the kinetic energy of wind to rotary motion that turns electrical generators. Wind turbines can be used not only to generate electricity, but also to pump water from underground wells.

Kinetic energy is the energy of an object in motion and is relative to the object's mass and velocity. The kinetic energy of water or wind is based on the accumulation of the mass of many small particles working together. Kinetic energy can be transferred or stored, but is never lost, as defined by the law of conservation of energy.

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## Related Questions

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Energy of motion is the energy an object possesses due to its motion, which is also called kinetic energy. This means that the object, which has energy of motion, can do work on any object it hits.

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Kinetic friction refers to the frictional force of a moving object. If a force is being applied on a stationary object, friction is considered a static force until movement occurs.

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Kinetic energy is either zero or positive, never negative. This is because kinetic energy is defined as half an objects' mass multiplied by the square of its velocity. Since mass is a measure of matter, it can never be negative, and since velocity is squared, it is always positive.