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Homework Help: Time for a cyclist to stop moving if he stops pedalling

  1. Jan 23, 2012 #1
    1. The problem statement, all variables and given/known data

    If the rider stops pedalling calculate the distance traveled by the bicycle before it comes to rest from an initial speed of 2m/s.

    Mass of rider: 60kg
    Mass of bicycle: 7 kg
    Drag: 7.5 V^2 (where V is the velocity)
    Slope : 10°

    3. The attempt at a solution

    F= ma
    -7.5V^(2) - sin10° mg = ma to find the deceleration

    however I know that the drag decreases with the decrease in velocity, hence the deceleration is not constant! I think I should use some sort of integral! HELP!!!!

    sorry guys I found the formula I was looking for derived by my lecturer!!
    Last edited: Jan 23, 2012
  2. jcsd
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