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The velocity of a boat in still water is...

The velocity of a boat in still water is `10 m//s`.If water flows in the river with a velocity of `6 m//s` what is the difference in times taken to cross the river in the shortest path and the shortest time.The width of the river is `80 m`.

A

`1s`

B

`10s`

C

`sqrt3/2s`

D

`2s`

Text Solution

Verified by Experts

The correct Answer is:
D
`t_(1)=d/sqrt(V_(B)^(2)-V_(W)^(2)),t_(2)=d/V_(B)`
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