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°.]
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 16P: A firefighter, a distance d from a burning building, directs a stream of water from a fire hose at...
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