A river of width 200 flows at 5 metre per second a man crosses the river in the shortest time of 25 seconds if there is no flow and screen with the same velocity the time taken to cross the river is
Answers
Answered by
11
25 sec
Explanation:
we know that;
T=d/VsrCos¢
(T)min=d/VsrCos0
means,
(T)min=d/Vsr
25=200/Vsr
Vsr=8 m/s
Now Time taken to cross the river when there is no flow of River will be;
Y-direction.
V=VsrCos¢
=VsrCos0
=Vsr
So, Time taken=distance/speed
T=200/8
T=25 sec
Answered by
1
Explanation:
25 sec is the correct answer
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