Answer:
In Fig. 4.105, and represent
the velocities of man and river. Clearly is the
resultant of these velocities. If the man begins to swim along AB, he will be
deflected to the path AC by the flowing river.
Time taken to cover distance AC
with velocity will
be same as the time taken to cover distance AB with velocity .
Time
taken by the man to cross the river is
.
Distance through which the man
goes down the river is
.
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