Kinetic energy

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

$E_k = \frac{1}{2} m v^2$

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

$E_r = \frac{1}{2} I \omega ^ 2 = \frac{1}{2} L \omega$

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.