Ko te nui o te mahi ka oti, ko te rahi o te pūngao ka pau i te takanga o tētahi wā. Ko te wata te waeine hei tohu i te kaha. Ko te wata kotahi e rite ana ki te whakapaunga o te kotahi wae pūngoi i ia hākona. Arā, 1W = 1J/s.
The amount of work which is done, the amount of energy that is used over a measure of time. The watt is the unit for measuring power. One watt is equal to the expense of one joule of energy per second (1W = 1J/s)