Answer:

Law of Conservation of Mechanical Energy : The total mechanical energy of a system (E) is defined as the sum of the kinetic energy (K) and the potential energy (U) of the system, i.e., E = K + U According to the law of conservation of mechanical energy:

The total mechanical energy of a system remains constant if the only force that does work is a conservative force.

Let us consider a body of mass m placed at A as shown in

h = AB = height of the body above the ground

x = distance of any point C from A

g = acceleration due to gravity at the place

v1 = velocity of the body at C

v = velocity of the body at B, a point just above the ground. The velocity at the point A is zero.

At the point A

Explanation: