Sheena can row a boat at 2.80 mi/h in still water. She needs to cross a river that is 1.20 mi wide with a current flowing at 1.60 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head upstream at an angle of 25.0° from the direction straight across the river. What is her speed with respect to the starting point on the bank? mi/h
Sheena can row a boat at 2.80 mi/h in still water. She needs to cross a river that is 1.20 mi wide with a current flowing at 1.60 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head upstream at an angle of 25.0° from the direction straight across the river. What is her speed with respect to the starting point on the bank? mi/h
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Sheena can row a boat at 2.80 mi/h in still water. She needs to cross a river that is 1.20 mi wide with a current flowing at
1.60 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head upstream at an angle of
25.0° from the direction straight across the river.
What is her speed with respect to the starting point on the bank?
mi/h
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Transcribed Image Text:Σ
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B
96
LL
%24
Sheena can row a boat at 2.80 mi/h in still water. She needs to cross a river that is 1.20 mi wide with a current flowing at
1.60 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head upstream at an angle of
25.0° from the direction straight across the river.
How long does it take her to cross the river?
minutes
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