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A boat crosses a river with a velocity o...

A boat crosses a river with a velocity of `8(km)/(h)`. If the resulting velocity of boat is `10(km)/(h)` then the velocity of river water is

A

10 km/hr

B

8 km/hr

C

6 km/hr

D

4 km/hr

Text Solution

Verified by Experts

The correct Answer is:
C
`v_(br)^2 = v_b^2 + v_r^2`
`rArr v_r = sqrt((10)^2 - (8)^2)) = 6km //hr`
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