Q.

A person swims in a river aiming to reach exactly opposite point on the bank of a river. His speed of swimming is 0.5 ms-1 is at an angle 120° with the direction of flow of water. The speed of water in stream is

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a

0.5m/s

b

0.43m/s

c

0.25m/s

d

1.0m/s

answer is C.

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Detailed Solution

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Velocity of person vm=0.5m/s

sin30=vwvm=vw=vmsin30 =vw=vm2=0.5m/s2=0.25m/s

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