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1 December, 17:36

How long will it take a force of 2.5 N to bring a 0.25-kg object to rest if it was moving at 1.4 m/s?

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  1. 1 December, 21:21
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    F = ma

    We also know that v = a*t

    and we are looking for t

    So now we can write a = F/m and fill in:

    v = F*t/m or t = v*m / F

    So finally:

    t = 1.4 m/s * 0.25 kg / 2.5 N = 0.14 s
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