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u said about taking which direction as negative why 2 do dat

Asked by 28th July 2012, 6:54 PM
Answered by Expert
Look in case of vectors, the sign depends on direction.
If we take an inbound ball as having a positive velocity then the outgoing ball going on exactly the opposite direction will have a negative velocity
Answered by Expert 28th July 2012, 10:27 PM
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