Before revision: Units The SI unit of work is the joule (J), named after the 19th-century English physicist James Prescott Joule , which is defined as the work required to exert a force of one newton through a displacement of one metre.
After revision: Units The SI unit of work is the joule (J), named after (1818-1889) English physicist James Prescott Joule , which is defined as the work required to exert a force of one newton through a displacement of one metre.