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Finding Distance Traveled

  1. Sep 23, 2007 #1
    1. The problem statement, all variables and given/known data
    A dockworker applies a constant horizontal force of 74.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 13.0 m in a time 4.50 s.

    If the worker stops pushing at the end of 4.50 s, how far does the block move in the next 5.70 s?

    2. Relevant equations


    3. The attempt at a solution

    I solved for mass, using the equation,

    m = 57.6

    now that I know mass

    how do I get started?

    I tried doing (74/57.6)5.70
  2. jcsd
  3. Sep 23, 2007 #2


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    You don't need the mass in this question or the force. You just need the velocity at the end of the 4.50s.

    Then you answer would be v*5.70s
  4. Sep 23, 2007 #3
    velocity should be then 13/4.50? am i right..
  5. Sep 23, 2007 #4


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    No. That is only for constant velocity... the block is accelerating.
  6. Sep 23, 2007 #5
    would velocity then be 5.78m/s?
  7. Sep 23, 2007 #6


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