A person travels along a straight road for the half time with a velocity `V_(1)` and the next half time with a velocity `V_(2)`. The mean velocity V of the man is

Options

A. `(2)/(v)=(1)/(v_(1))+(1)/(v_(2))`
B. `v=(v_(1)+v_(2))/(2)`
C. `v=sqrt(v_(1)v_(2))`
D. `v=sqrt((v_(1))/(v_(2)))`

Answer

B