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Grade 11General Physics

A swimmer wishes to cross a 500 m wide river flowing at 5 km/h. His speed with respect to water is 3 km/h. (a) If he heads in a direction making an angle θ with the flow, find the time he takes to cross the river. (b) Find the shortest possible time to cross the river.PLease explain because how to get components and other things because only answer would make me understand nothing

Profile image of Gaurang Kotasthane
9 Years agoGrade 11
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1 Answer

Profile image of Vikas TU
9 Years ago
The man should swim in oppsoite side of the river as to cross in time,
The time required would be:
t = 0.5/|v|sinthetha = (0.5/3*sinthetha)*60 = 10/sintthetha minutes.

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