Asked by kek

At the gym, a woman lifts 40 kilograms of weights on the leg press machine. It takes her 0.5 seconds to raise the weights a vertical distance of 0.4 meters.

How much power does the woman generate when lifting the weights?
A) 180 watts
B) 200 watts
C) 320 watts
D) 500 watts

Answers

Answered by Bob._.Hello>->
I believe B is right but I also think that D is right o.o
Answered by Damon
40*9.81*.4 = work done

power = work /second
so
P = 40 * 9.81 * .4/.5

= 314 Watts
if you used 10 m/s^2 for g you would get C
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