Question

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Answer 1

Answer:

10 kg

Explanation:

Power = work/time

work=force x displacement

force = mass x acceleration

acceleration=velocity/time

Therefore Power=(velocity)*(mass)*(displacement) ÷ (time)*(time)

In the given question

power,P = 100 W

velocity,v = 1 m/s

since time, t = 1 s

displacement, s = 1 m

acceleration,a =10 m/s (acceleration to overcome gravity)

we have to find mass m

P=m×a×s÷t

100=m×10

m= 10 kg

Answer 2

Answer:

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