Answers
f) Power is the rate of doing work
Power (In Watts) = work done (in Joules) / time (in seconds)
g) 1 watt is the rate of working at one Joule per second
13. P = Wd/t = 1000/5 = 200W
14. P = Wd/t
Work done = force x distance = 300 x 2
P = 600/6 = 100W
15. P = Wd/t
Work done = f x d = 3000 x 10
P = 30000/4 = a) 7500W => b) 7.5kW
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