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A mover pushes a 245 kg piano so that it accelerates uniformly from rest to 1.5 m/s in 5.00 s. What is the power delivered by the mover in this time interval? A 55W B 110W C 280W D 540 W

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instaoceanclash

Answer:

B, 110 W

Explanation:

we can use the equation P = Fv

P = Fv

P = mav

m = 245 kg

a = (vf - vo)/t

a = (1.5 - 0)/5

a = 0.3 m/s^2

v = 1.5 m/s

P = 245 * 0.3 * 1.5

P = 110 W

answer choice B

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