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22 March, 18:14

What is the minimum work needed to push a 920-kg car 310 m up along a 6.5 ∘incline? Ignore friction. Express your answer using two significant figures.

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  1. 22 March, 20:06
    0
    2800000J

    Explanation:

    Parameters given:

    Mass = 920kg, weight = 920 * 9.8 = 9016N

    Distance = 310m

    Angle of inclination = 6.5°

    Work done is given as:

    W = F*d*cosA

    Where A = angle of inclination

    W = (9016 * 310 * cos6.5)

    W = 2776993.59J

    In 2 significant figures, W = 2800000J
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