A boat must cross a 260-m-wide river and arrive at a point, Ask an Expert

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A boat must cross a 260-m-wide river and arrive at a point 110 m upstream from where it starts (see figure). To do so, the pilot must head the boat at a 45o upstream angle. The current has speed 2.3 m/s.

(a) What is the speed of the boat in still water?

(b) How much time does the journey take?

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