Definition:
The kinetic energy of an object is the extra energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its current velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. Negative work of the same magnitude would be required to return the body to a state of rest from that velocity.

Examples:

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• Newton's Cradle: As the ball that is in motion collides with a stationary ball, the kinetic energy of the ball that is in motion undergoes a quick conversion to potential energy. As the ball stops, the potential energy is then converted back to kinetic energy, which is passed along through the stationary balls, putting the final ball in motion. This cycle then repeats.





• Billiards: Kinetic energy is passed from one object to another in the game of billiards. The player gives kinetic energy to the cue ball by striking it with the cue stick. If the cue ball collides with another ball, it will slow down dramatically and the ball it collided with will accelerate as the kinetic energy is passed on to it.

How does the Water Ram use kinetic energy?
By snapping the device's trigger, a slug of compressed air creates a shock wave that strikes a clog at around 4,700 feet per second. The clog disintegrates, and the particles are flushed away. Since the shock wave travels so fast, it bypasses vents and 98% of its force hits the clog head-on. There's no pressure buildup in the system, so pipes and joints aren't affected.