A man can swim in still water at a speed of 3 km/h. He wants to cross a river that flows at 2 km/h a

A man can swim in still water at a speed of 3 km/h. He wants to cross a river that flows at 2 km/h and reach the point directly opposite to his starting point. (a) In which direction should he try to swim (that is find the angle his body makes with the river flow) ? (b) How much time will he take to cross the river if the river is 500 m
A man can swim at a speed of 3 km/h in still water. He wants to cross a 500 m wide river flowing at 2 km/h. He keeps himself always at an angle of 120° with the river flow while swimming. (a) Find the time he takes to cross the river. (b) At what point on the opposite bank will he arrive ?
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