Robin pushes a wheelbarrow by exerting a 178.5N force horizontally. Robin moves it 68.8m at a constant speed for 29.9s. If Robin moves the wheelbarrow 3.5 times as fast, how much power is developed?

Question

Robin pushes a wheelbarrow by exerting a 178.5N force horizontally. Robin moves it 68.8m at a constant speed for 29.9s. If Robin moves the wheelbarrow 3.5 times as fast, how much power is developed?

Answer 1

Hi Nae B,

Robin pushes a wheelbarrow by exerting a 178.5N force horizontally. Robin moves it 68.8m at a constant speed for 29.9s. If Robin moves the wheelbarrow 3.5 times as fast, how much power is developed?

P= F•v = F•(x/t)

at 3.5 time as fast, P = 178.5•(68.8/29.9)•3.5 = 1437.6 Watts

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