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:B
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