Said can swim at 5 m/s in still water. He wishes to swim across a river 200m wide to a point directly opposite from where he is standing. The river flows westward at 4 m/s and he is standing on the south bank of the river. a) Draw a diagram. b) What is Said’s speed relative to the ground? c) In what direction must Said head? d) How long does it take to cross the river??
Said can swim at 5 m/s in still water. He wishes to swim across a river 200m wide to a point directly opposite from where he is standing. The river flows westward at 4 m/s and he is standing on the south bank of the river. a) Draw a diagram. b) What is Said’s speed relative to the ground? c) In what direction must Said head? d) How long does it take to cross the river??
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 5CQ
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Said can swim at 5 m/s in still water. He wishes to swim across a river 200m wide to a point
directly opposite from where he is standing. The river flows westward at 4 m/s and he is standing
on the south bank of the river.
a) Draw a diagram.
b) What is Said’s speed relative to the ground?
c) In what direction must Said head?
d) How long does it take to cross the river??
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