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A man is crossing a river flowing with v...

A man is crossing a river flowing with velocity of `5m//s`. He reaches a point directly across at a distance of 60m in 5 sec. His velocity in still water should be

A

`12m//s`

B

`13m//s`

C

`5m//s`

D

`10m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
The resultant velocity should be in the direction of resultant displacement

So time`=60/sqrt(v_(m)^(2)-5^(2))=5 :' v_(rm)=13 m//s`
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