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Force question

  1. Jun 20, 2009 #1
    how would we calculate the force if something was moving at a constant velocity
    and hit a wall or the ground , i know that if the velocity was constant there is no force but if it hit a wall or something , would this just be a change in momentum p=mv
  2. jcsd
  3. Jun 20, 2009 #2


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    Gold Member

    This is a common question. The net force exerted on an object is equal to [tex]\frac{{dp}}{{dt}}[/tex]. You need to know the time interval that the force (ie the something changing velocity) acted upon in order to determine what hte force's magnitude was.
  4. Jun 21, 2009 #3
    Last edited: Jun 21, 2009
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