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A Swimmer Enters a Straight River at Point a and Attempts

Question 84

Multiple Choice

A swimmer enters a straight river at Point A and attempts to swim directly across to the opposite shore.  Instead, the swimmer arrives at Point B diagonally downstream on the opposite shore after 80 seconds of swimming.  If the river is 30 m wide and flows downstream at a velocity of 0.5 m/s, what is the minimum distance between Points A and B?  (Note: Assume the swimmer does not act to oppose the flow of the river.)


A) 30 m
B) 40 m
C) 50 m
D) 60 m

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