Question

The potential energy of a body at height h is $mgh.$. Then its kinetic energy just before hitting the ground is _________

Answer 1

Potential Energy and Kinetic Energy.

1. Potential Energy- The energy possessed by an object due to its position.
2. Kinetic Energy- The energy possessed by an object due to its motion.

Explanation.

1. According to the law of conservation of mechanical energy, the potential energy of a body at height h is turned into kinetic energy when it falls.
2. The kinetic energy just before hitting the ground is equal to the potential energy at height h which is $mgh.$

Hence, The potential energy of a body at height h is $mgh.$then its kinetic energy just before hitting the ground is $\mathit{m}\mathit{g}\mathit{h}\mathbf{.}\mathbf{}$