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A swimmer is capable of swimming 0.74 m/s in still water.  She wants to arrive at a point directly across the stream of a 47m wide river whose current is 0.50 m/s. a.) At what angle upstream must she aim? b.) How long will it take her to cross the river?

A swimmer is capable of swimming 0.74 m/s in still water.  She wants to arrive at a point directly across the stream of a 47m wide river whose current is 0.50 m/s. a.) At what angle upstream must she aim? b.) How long will it take her to cross the river?

University Physics Volume 1
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter4: Motion In Two And Three Dimensions
Section: Chapter Questions
Problem 78P: A river is moving east at 4 m/s. A boat starts from the dock heading 30 north of west at 7 m/s. If...
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A swimmer is capable of swimming 0.74 m/s in still water.  She wants to arrive at a point directly across the stream of a 47m wide river whose current is 0.50 m/s.

a.) At what angle upstream must she aim?

b.) How long will it take her to cross the river?

 
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A swimmer is capable of swimming 0.74 m/s in still water. She wants to arrive at a point directly across the stream of a 47-m-wide river whose current is 0.50 m/s. How long will it take her to cross the river? Express your answer to 3 significant figures. | ΑΣΦ m
Transcribed Image Text:A swimmer is capable of swimming 0.74 m/s in still water. She wants to arrive at a point directly across the stream of a 47-m-wide river whose current is 0.50 m/s. How long will it take her to cross the river? Express your answer to 3 significant figures. | ΑΣΦ m
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