WHY is it that in some questions of relative motion we use pythagorus theorem while in SOME OTERS we just simply add the vel.s ??

Asked by komal tanwar | 29th Oct, 2013, 03:10: PM

Expert Answer:

If the two velocities act in one dimension only, then we either add/subtract the two to get the relative velocity. And if the two velocities act perpendicular to each other (i.e. in a plane), we use pythagorus theorem to find the relative velocity.
However, the general formula for the relative velocity is

Answered by  | 30th Oct, 2013, 12:04: PM

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