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Physics, 04.11.2020 19:00 kitttimothy55
A boat is able to move through still water at 20m/sec. it sails upstream and then backto the starting point. if the river flowsat 5m/s, what is the average speed for the round trip?
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A boat is able to move through still water at 20m/sec. it sails upstream and then backto the startin...
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