【正文】
1watt If a person or a machine is doing 1J of work each second ,the power rating is 1 W. Example Go on looking at the athlete, if the work takes the athlete to lift the weights above his head, what is the power of the athlete? Power= sJ4 0 0 0=8000Wor 8Kw Sum up ? Work 。 power。 *功率表示力做功的快慢程度。 1Watt.