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2014-07-24T21:12:28+05:30

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When the dog starts walking it gains Kinetic energy and he is being able to walk due to the third law of motion which says that every action has equal & opposite reaction.
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i did not say that dog was sleeping in air
dog was in contact with ground already
Go on.. Child...!! This is all i know... Rest up to you,...
then you can not give me answer of this question
I gave.. If you ask about the way the force acts.. 1st contact force 2nd frictional force
2014-07-24T22:00:47+05:30
The external force used for the doggy to move is when one body exerts on a second body, the first body which is the doggy experiences a force and thus helps the dog to move.
Based on newton's third law of motion.

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