# Kinetic energy

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Kinetic energy is a form of energy all bodies have when moving. Unless at absolute zero, all particles have kinetic energy. The formula for kinetic energy is $0.5*mass*velocity^2$.

If an object is dropped form a height then, just before it hits the ground, it is said that $K.E.=G.P.E.$ where the gravitational potential energy at the beginning, $G.P.E.=mgh$, is equal to the kinetic energy just before it hits the surface $0.5*mass*velocity^2$. This can be used to find the speed of an object or the height from which it was dropped.