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Two canoeists in identical canoes exert the same effortpaddling and hence maintain the same speed relative to the water.One paddles directly upstream (and moves upstream), whereas theother paddles directly downstream. With downstream as the positivedirection, an observer on shore determines the velocities of thetwo canoes to be -1.2 m/s and+2.9 m/s,respectively.

(a) What is the speed of the water relative toshore?

m/s

(b) What is the speed of each canoe relative to the water?

canoe going upstream m/s

canoe going downstream m/s

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