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

Asked by  | 28th Jul, 2012, 06:54: PM

Expert Answer:

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  | 28th Jul, 2012, 10:27: PM

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