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A body covers one-third of its jurney wi...

A body covers one-third of its jurney with speed `v_(1)`, next one-third with speed ` v_(2)` and last one-third with speed `v_(3)`. Calcuate the average dpeed of the during the entire journey.

A

`(v_(1)v_(2)+v_(2)v_(3)+v_(3)v_(1))/(v_(1)+v_(2)+v_(3))`

B

`(v_(1)+v_(2)+v_(3))/(3)`

C

`(v_(1)v_(2)v_(3))/(v_(1)v_(2)+v_(2)v_(3)+v_(3)v_(1))`

D

`(3v_(1)v_(2)v_(3))/(v_(1)v_(2)+v_(2)v_(3)+v_(3)v_(1))`

Text Solution

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The correct Answer is:
D
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