Question

Define kinetic energy how will the kinetic energy change if the momentum of the body is doubled.

Answer 1

Kinetic energy : Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.

Kinetic energy of a body whose mass is $m$ and momentum is $p$

$⟹K=\frac{p^2}{2m}$

If the momentum of body will be doubled then the kinetic energy will becomes four times