In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to a stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
There are many forms of kinetic energy, such as radiant, thermal, sound, electrical (light), mechanical (motion), vibrational (the energy due to vibrational motion), and rotational (the energy due to rotational motion),
Everywhere that we look there is motion in the world. The question is—can we harness this energy that would otherwise be wasted in order to power our gadgets and generate clean electricity? If an object gathers speed from a stopped position to set velocity, it uses energy. The object will keep that energy providing its speed doesn't change. When the object decelerates, the energy from its motion can be transferred in various ways.
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