Question

A body moves from A to B at a speed of 10 m/s
and back to A along the same path at a speed
of 20 m/s. Find its average speed and average
velocity for the journey.

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Answer 1

in these cases formula is 2V1V2/V1+V2

average speed=2×10×20/10+20=4/3m/s

average velocity =10i-20i=-10i