What happens to the kinetic energy when the velocity of a moving body is trippled?
The kinetic energy increases by 9 times when the velocity of a moving body is trippled.
Mathematical expression for Kinetic Energy (KE) = 1/2 m(v)2
When the velocity of body is trippled, new velocity (v') = (3v)
So, new Kinetic Energy (KE') = 1/2 m(v')2
= 1/2 m(3v)2
= 1/2 m(9v2)
= 9 . 1/2 m(v)2
= 9 KE