1. May 11, 2008 #1

   MrPickle

   

   This law is confusing me. If everything needs an equal and opposite reaction how do things move? Surely everything should be stationary if this law is true?

    

   MrPickle, May 11, 2008
2. 
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3. May 11, 2008 #2

   Monocles

   

   The forces act on different objects. For example, consider a ball dropped from a building. Ignoring drag, there is only 1 force acting upon it, which is the pull of gravity from the Earth acting on the ball. The other force that makes this an equal and opposite reaction is the ball pulling on the Earth. The forces are acting on different objects, therefore both objects move.

    

   Monocles, May 11, 2008
4. May 11, 2008 #3

   MrPickle

   

   Oh, I see! Thank you :)

    

   MrPickle, May 11, 2008

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