Physics Practice Problems Relative Motion Practice Problems Solution: A boat, whose speed in still water is 2.70 m/s, mu...

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Solution: A boat, whose speed in still water is 2.70 m/s, must cross a 280 m-wide river and arrive at a point 120 m upstream from where it starts. To do so, the pilot must head the boat at a 45.0° upstream angle. What is the speed of the river’s current?

Problem

A boat, whose speed in still water is 2.70 m/s, must cross a 280 m-wide river and arrive at a point 120 m upstream from where it starts. To do so, the pilot must head the boat at a 45.0° upstream angle. What is the speed of the river’s current?