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Homework Help: A question about momentum ?

  1. Sep 14, 2009 #1
    A question about momentum ??

    I have a question about momentum with respect to Newtons Second Law of Motion.When We hit a soccer ball our foot does not hurt but when we hit a rock our foot hurts badly.What is the reason of this ? I think it is related to reaction time
  2. jcsd
  3. Sep 14, 2009 #2
    Re: A question about momentum ??

    Yup, if you view a soccer ball being kicked in slow-motion, you will actually see it deform as it is elastic. The rock however, is much less elastic and hence the period of the interaction is significantly less.
  4. Sep 15, 2009 #3


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    Re: A question about momentum ??

    The mass of the two objects would also play a part as well. Compare the mass of a soccer ball to a "rock".
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