Kinetic Energy is energy being used to carry out a task of work.  Kinetic energy depends on an objects mass and speed.  

The equation fro Kinetic is:

Kinetic Energy = (1/2) Mass x Velocity2

KE= 1/2 m x V2

Example Problem:

    If a volleyball has a  mass of 10 grams, and while in motion its Velocity is 5, what is its Kinetic energy?

KE= 1/2 m x V2

KE= (1/2 x 10) x 5 m/s 2