A man Can swim in still water at speed of 6kmph & he has to cross the river & reach just opposite point on the other bank if the river is flowing at a speed of 3kmph & the width of river is 2km the time taken to cross the river is in hours
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Answer:
Final Answer : with the vertical.
Steps :
1) Man has to swim in such a way that, he want to reach just opposite point on the other bank.
=> Drift is 0 .
2)Speed of River is 3km/h in horizontal direction.
=> For Drift to be zero, Horizontal component of velocity of man should be 3km/h leftward.
as shown. We get,
Hence, Man has to swim by making angle with vertical.
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