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A particle covers half of its total dist...

A particle covers half of its total distance with speed `v_(1)` and the rest half distance with speed `v_(2)`. Its average speed during the complete journey is :

A

`(2v_(1)v_(2))/(v_(1)+v_(2))`

B

`(v_(1)+v_(2))/(2)`

C

`sqrt(v_(1)v_(2))`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
The average velocity is the Harmonic mean of `v_(1) and v_(2)`.
`therefore "Average Velocity" =(2v_(1)v_(2))/(v_(1)+v_(2))`
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