# Kinetic energy

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**Kinetic energy** (symbol KE, measured in Joules) is the energy which any moving object has due to its motion. In classic physics, the formula for the kinetic energy of a moving object it

In rotational systems, it is equal to one half of the moment of inertia (*I*) times the angular velocity (*ω*) squared.

The kinetic energy of a falling body when it strikes the ground is equal to its potential energy at the height from which it was dropped.