Question

The sum of potential and kinetic energies in the particles of a substance is called _______ energy.

Answer 1

I think the sum of potential and kinetic energies in the particles of a substance is called the internal energies ?

Answer 2

Answer: Mechanical energy

Explanation:

Mechanical energy of a body can be defined as the sum of potential energy and kinetic energy of a system.

The conservation of mechanical energy states that the sum of kinetic energy and potential energy in a system remains constant.

The only condition is the forces acting on it should be conservative forces.

Example: Running of a dog. It is its mechanical energy that is allowing a dog to run by the combination of kinetic and potential energy.