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An autos velocity increases uniformly from 6m/s to20m/s while covering 70m.find the acceleration and the time taken.

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asked by Anonymous
  1. s = 6t + 1/2 at^2
    v = 6+at

    20 = 6+at
    at = 14

    70 = 6t+7t = 13t
    t = 70/13
    a = 14/t = 14*13/70 = 13/5

    with appropriate units

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    posted by Steve

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