### Kinetic Energy Equation and Calculator

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 its stated velocity . Having gained this energy during its acceleration , the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body in decelerating from its current speed to a state of rest.

In classical mechanics , the kinetic energy of a non-rotating object of mass *m * traveling at a speed *v * is 1/2(mv^{2}). In relativistic mechanics , this is a good approximation only when *v * is much less than the speed of light .

Equation:

E_{k} = 1/2(mv^{2})

Where:

E_{k} = Kinetic Energy

m = mass

v = velocity

MASS (kg) |
VELOCITY (m/s) |
KINETIC ENERGY (joules) |