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If a body covers first half of its journ...

If a body covers first half of its journey with uniform speed `v_(1)` and the second half of the journey with uniform speed `v_(2)`. Then the average speed is

A

`v_(1) + v_(2)`

B

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

C

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

D

`v_(1)v_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Average speed ` = (s_(1) + s_(2))/(t_(1) + t_(2)) rArr v = (2v_(1)v_(2))/(v_(1) + v_(2))`
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