Question

What do you mean by mechanical energy,potential energy,kinetic energy?

Answer 1

Simply, knetic energy is that energy which occur in motion.
Potential energy is that energy who against the gravity and friction.
And the combination of kinetic and potential energy is known as mechanical energy.

Answer 2

The energy possessed by a body by virtue of its position or due to its motion is called mechanical energy.
Potential energy is the energy possessed by an object due to its position or change in shape. Example, water stored in a dam at a height.
Kinetic energy is the energy possessed due to its motion.
Regards.....