physics work please help?

Robin pushes a wheelbarrow by exerting a 164 N force horizontally. Robin moves it 76 m at a constant speed for 25 s. What power does Robin develop? Answer in units of W. If Robin moves the wheelbarrow 6 times as fast, how much power is developed? Answer in units of W.

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  • 9 years ago
    Favorite Answer

    use power = work done / time taken

    work done = force * displacement made by force.

  • Anonymous
    9 years ago

    Work done = 164 x 76 = 12464 joules.

    Power = 12464 ÷ 25 = 498.56 watts.

    Six times faster means 6 times more power = 2991.36W.

    Source(s): Physics A level
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