-- 2. A person travels along a straight road for the first 1... — Physics | Mockzy | Mockzy

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-- 2. A person travels along a straight road for the first 1/3 time with a speed v1 and for next 2/3 time with a speed v2. Then the mean speed v is given by

A

v = (v1 + 2v2) / 3

B

1/v = 1/(3v1) + 2/(3v2)

C

v = 1/3 * sqrt(2v1v2)

D

v = sqrt(3v2 / 2v1)

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