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A man can swim at a speed of 3 km h^-1 i...

A man can swim at a speed of `3 km h^-1` in still water. He wants to cross a `500-m` wide river flowing at `2 km h^-1`. He keeps himself always at an angle to `120^@` with the river flow while swimming.
The drift of the man along the direction of flow, when he arrives at the opposite bank is.

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