A person travelling on a straight line moves with a uniform velocity `v_(1)` for a distance x and with a uniform velocity `v_(2)` for the next equal distacne.The averahe velocity v is given by

Options

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

Answer

C