Question

A. What is energy? Write its unit. subject science​

Answer 1

Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or various other forms.

Answer 2

Energy is the capacity of a physical system to do work. The standard unit is the joule, symbolized by J.

Step-by-step explanation:

One joule (1 J) is the energy resulting from the equivalent of one newton (1 N) of force acting over one meter (1 m) of displacement.