A joule is the SI unit of work or energy, equivalent to one newton-meter. It measures the amount of work done when a force of one newton displaces an object by one meter in the direction of the force.
5 Must Know Facts For Your Next Test
One joule is equal to $1 \text{N} \cdot 1 \text{m}$.
The joule is named after James Prescott Joule, an English physicist.
In electrical terms, one joule is equal to one watt-second.
The joule can be used to measure any form of energy including kinetic, potential, and thermal energy.
One calorie is approximately equal to 4.184 joules.