Part A) You are a member of a production crew filming a nature explorer in the r

Question

Part A)   You are a member of a production crew filming a nature explorer in the rocky mountains. The explorer needs to swim across a river to his campsite. By watching debris flowing down the river, you estimate that the stream is flowing 0.629 m/s. In still water he can swim at 0.755 m/s. At what angle with respect to the shoreline would you advise him to swim to travel directly across the stream to his camp fire?

Part B)The waiter is near freezing temperature.Typically a human can swim in such water for 300 (s) or 5 min before hypothermia sets in. Calculate the time that the expolorer spends in the water if the river is 28.7 meters wide.

Explanation / Answer

angle with respect to shoreline so

0.755*cos(theta) = 0.629

theta =arcos(0.629/0.755)=33.58 degrees

b) time = d/v = 28.7/(0.755*sin(33.58))=45.84 s

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