A child, who is 45 m from the bank of a river, is
Chapter 3, Problem 3.61(choose chapter or problem)
A child, who is 45 m from the bank of a river, is beingcarried helplessly downstream by the rivers swift current of1.0 m/s. As the child passes a lifeguard on the rivers bank,the lifeguard starts swimming in a straight line until shereaches the child at a point downstream (Fig. 3-50). Ifthe lifeguard can swim at a speed of 2.0 m/s relative to thewater, how long does it take her to reach the child? How fardownstream does the lifeguard intercept the child?
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