1.

Two men are running on a straight north -south track. The personA moves north with a speed of 5 m *s^(-1)while B moves south with a speed of 2 m *s^(-1). Determint the velocity ( magnitude only) of (i)A with respect to B . (ii) the ground with respect to A . (iii) B with respect to A .

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ANSWER :7,5,7


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