(Answered) A river flows with a uniform velocity v a person in a

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A river flows with a uniform velocity v. A person in a motorboat travels 1.15km upstream, at which time she passes a log floating by. Always with the same throttle setting, the boater continues to travel upstream for another 50.6min and then returns downstream to her starting point, which she reaches just as the same log does. Calculate the velocity of the river.

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