Homework Help: physics

Posted by john on Monday, October 18, 2010 at 8:11am.

A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. What is the minimum time necessary for crossing?

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