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Mechanics help

  1. Oct 29, 2012 #1
    Completely lost on this question, would be brilliant if someone could offer a solution. Thank you

    A coin is projected with a speed of 6m/s along the horizontal surface of a bench. The coefficient of friction between the bench and the coin is 0.7. Modelling the coin as a particle and assuming no air resistance, find the speed of the coin after 0.3 seconds
     
  2. jcsd
  3. Oct 29, 2012 #2
    Does this get you started?
     

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