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Ball throw force problem

  1. Dec 6, 2009 #1
    1. The problem statement, all variables and given/known data
    You throw a ball. When the ball is many meters away from you, is the force of your hand still acting on the ball?

    2. The attempt at a solution
    My thoughts are:
    No because it's many meters away.
    Yes because it's still moving from the throw.

    I have no idea which is right :(
     
  2. jcsd
  3. Dec 6, 2009 #2
    Re: Force?

    The answer is no. The force exerted by your hand was necessary to cause a change in motion, but not necessary for motion itself. This point was the fundamental difference between Newtonian and Aristotelian mechanics.
     
  4. Dec 6, 2009 #3
    Re: Force?

    Ace, thanks.

    5 makeup assignments done, 6 to go :D
     
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