### Work

Work is said to be done when a force applied to an object moves that object.We can calculate work by multiplying the force by the movement of the object.

### Energy

Energy is the capacity to do work. For the potential energy the formula is

P.E. = mgh

**Power**

Power can be defined as the rate at which work is done i.e. energy converted.

The formula for power is

P = W/t

The unit of power is **watt (W).**