Kinematics Question 325
Question: A river it’s flowing from east to west at a speed of 5 m/min. A man on south bank of river, capable of swimming 10m/min in still water, wants to swim across the river in shortest time. He should swim [BHU 1998]
Options:
A) Due north
B) Due north-east
C) Due north-east with double the speed of river
D) None of these
Correct Answer: A For shortest time, swimmer should swim along AB, so he will reach at point C due to the velocity of river. i.e. he should swim due north.
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