Question

Define what is energy in physics ​

Answer 1

Explanation:

Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.

Answer 2

Energy is the capability to do the work.

S.I unit is joule.

Commercial unit is kWh.