Answers

2016-01-24T22:28:57+05:30
Mass = 10kg
Acceleration = 10m/s2
time = 4sec
Height =10m
Therefore energy = mgh = 10*10*10=1000 J
And,
Power = energy / time
P = 1000/4
P = 250 W.  
So the answer is 250 W….
 
I hope it helps.. 
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