Question

A
person travels along a straight road for the first half time with a velocity and the next half time
with a velocity. The mean velocity of the man is
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Answer 1

Answer:

Correct option is

A

vˉ=2v1+v2

For the first half time=t, velocity=v1, distance=s1=v1t

For the second half time=t, velocity=v2, distance=s2=v2t

Mean velocity =t+ts1+s2=2tv1t+v2t=2v1+v2