Question

What is meant by energy? Mention its SI unit.

Answer 1

1. Energy can be defined as the ability to do work.
2. The amount of energy possessed by a body is equal to the amount of work it does when its energy is released.
3. Energy is a scalar quantity.
4. The SI unit of energy is $\text{Joule}$.
5. The energy required to do 1 $\text{joule}$ of work is called 1 $\text{joule}$ energy.