A man wants to reach point B on the opposite
bank of a river flowing at a speed u as shown
in figure. What minimum speed relative to
water should the man have so that he can
reach directly to point B? In which direction
should he swim?
JB
A/45°
(1)
45° with upstream
(2)
45° with upstream
(3)
. 30° with upstream
(4), 60° with upstream
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1
Answer:
45 degree with upstream
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