Power is the rate of doing work
Power - in watts - = work done - joules- / time - seconds-
1 watt is a rate of working of one joule per second
1. 1000/5 = 200w
2. p=wd/t
Wd = Fxd
600/6 = 100w
3 p=wd/t
p=30000/4
= 7500w
= 7.5kw
Power questions19 August 201117:30PFY, p. 120
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