In Newtonian mechanics, work is a measure of energy expended in applying force over a distance.
For the motion of a body against a constant force, work can be expressed as:
- W = F · d (dot product)
-
- W : work (energy)
- F : force
- d : distance moved
The SI derived unit of work is the Joule. Other units include the erg, the foot-pound, and the foot-poundal.