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Computation. A river is 57 m wide and you want to swim straight across it. You find that you can do this if you swim at an angle of 0 = 28° from the upstream direction at a constant rate of 1.2 m/s (relative to th water). What is the river's flow speed relative to the ground, Vrg? [Note: Notice carefully that the angle 0 is measured from the river bank so that directly upstream is 0 = 0° and directly across the river is 0 = 90°.]

Computation. A river is 57 m wide and you want to swim straight across it. You find that you can do this if you swim at an angle of 0 = 28° from the upstream direction at a constant rate of 1.2 m/s (relative to th water). What is the river's flow speed relative to the ground, Vrg? [Note: Notice carefully that the angle 0 is measured from the river bank so that directly upstream is 0 = 0° and directly across the river is 0 = 90°.]

College Physics
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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Computation. A river is 57 m wide and you want to swim straight across it. You find that you can do this if you swim at an angle of 0 = 28° from the upstream direction at a constant rate of 1.2 m/s (relative to the water). 7 What is the river's flow speed relative to the ground, Urg [Note: Notice carefully that the angle 0 is measured from the river bank so that directly upstream is 0 = 0° and directly across the river is 0 = 90°.] Urg m/s Record your numerical answer below, assuming three significant figures.
Transcribed Image Text:Computation. A river is 57 m wide and you want to swim straight across it. You find that you can do this if you swim at an angle of 0 = 28° from the upstream direction at a constant rate of 1.2 m/s (relative to the water). 7 What is the river's flow speed relative to the ground, Urg [Note: Notice carefully that the angle 0 is measured from the river bank so that directly upstream is 0 = 0° and directly across the river is 0 = 90°.] Urg m/s Record your numerical answer below, assuming three significant figures.
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