A body is falling freely under the action of force of gravity alone. No air resistance is there as duc laxly is falling in Vacuum. Out of the following quantities which of them remains contant during its fall?

Options

A. Kinetic energy only
B. Potential energy only
C. Total mechanical energy
D. Total linear momentum.

Answer

c

Explanation

Here it can be proved even mathematically that the sum of (P.E+K.E) is always constant when the body is falling freely in vacum.