A machine has a power of 20kW. How long will it take for it to lift a body of mass 10kg from the ground to a height of 100m? (Assume g = 10m/s2)

A machine has a power of 20kW. How long will it take for it to lift a

1.	A machine has a power of 20kW. How long will it take for it to lift a body of mass 10kg from the ground to a height of 100m? (Assume g = 10m/s2)
A.	1 second
B.	2 seconds
C.	3 seconds
D.	4 seconds
Answer» C.

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