Work is said to be done when a forcemoves an object through a distance.

If we want to quantify (measure it or put a figure on) the amount of work done, we must know the magnitude (size) of the force applied, and the distance the object was moved.

Work done is the product of the force applied to do the work and the distance that we move the object.

When carrying out calculations of this nature, we must be careful to use base and/or base derived units, in this case, the metre for distance and the Newton for force.

Don't forget, as well as work being done in a straight line, work can also be done in rotation. We have a special word to describe this type of work done in rotation: torque.

If we time the rate at which this work is done, then we are measuring the power being expended: