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SAT, 01.10.2021 14:40 amanuelwold

two speedboats are traveling at the same speed relative to the water in opposite directions in a moving river. an observer on the riverbank sees the boats moving at 4.0 m/s and 5.0 m/s. (a) what is the speed of the boats relative to the river? (b) how fast is the river moving relative to the shore?

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