Question

A river flows with a uniform velocity v⃗. A person in a motorboat travels 1.00 km upstream, at which time she passes a log floating by. Always with the same throttle setting, the boater continues to travel upstream for another 60.0 min and then returns downstream to her starting point, which she reaches just as the same log does. Find the velocity of the river. (Hint: The time of travel of the boat after it meets the log equals the time of travel of the log.)

Answer 1