Question

WILL GIVE THAT CROWN THINGY!

Answer 1

Answer:

Mechanical energy is the sum of the potential and kinetic energies in a system. The principle of the conservation of mechanical energy states that the total mechanical energy in a system remains constant as long as the only forces acting are conservative forces.

Explanation:

Answer 2

Answer:

The energy conservation law is a consequence of the shift symmetry of time; energy conservation is implied by the empirical fact that the laws of physics do not change with time itself.

Explanation:

hope this helps ( use ur own words)