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5 October, 21:51

A car slows down from - 27.7 m/s to - 10.9 m/s while undergoing a displacement of - 105 m. What was its acceleration? (Unit = m/s^2)

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  1. 5 October, 23:56
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    Torricelli's equation

    Vf² = Vo² + 2aΔx

    Vf = 10,9 m/s

    Vo = 27,7 m/s

    a = ?

    Δx = 105

    Therefore:

    10,9² = 27,7² + 2*a*105

    118,81 = 767,29 + 210a

    210a = - 648,48

    a = - 648,48 / 210

    a = - 3,088 m/s²
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