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23 January, 19:55

A bicyclist is going 7 m/s. He squeezes the brakes, giving him an acceleration of - 1.2 m/s2 How fast is the bicyclist going after 3 seconds of applying the brakes?

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Answers (2)
  1. 23 January, 21:07
    0
    2.4 m/s because 7 - (3x-1.2) = 7 - 4.6 = 2.4m/s
  2. 23 January, 21:49
    0
    V = Vi + at

    V = 7 - 1.2*3 = 3.4 m/s
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