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Question on Third law of motion.

  1. Nov 14, 2009 #1
    Acc: to the third law of motion.
    if one body acts force on another body then another body acts same force on it.
    Ex:One block hits another block.so they apply force on each other

    My question is that!
    why block not cames to rest.and for small interval it has some vel:.
     
  2. jcsd
  3. Nov 14, 2009 #2
    They still apply the same force. The only thing is the block that was moving initially is carrying momentum when it collides with the second.
     
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