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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 5 - Relative Motion > 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.the time he takes to cross the river is.

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.the time he takes to cross the river is.

A boat is sent across a river with a velocity of 8 kmh^−1. If the resultant velocity of the boat is 10 kmh^−1 the river is flowing with a velocity of