A swimmer at point S in Figure 31-53 develops a leg cramp
Chapter , Problem 7(choose chapter or problem)
A swimmer at point S in Figure 31-53 develops a leg cramp while swimming near the shore of a calm lake and calls for help. A lifeguard at point hears the call. The lifeguard can run and swim She knows physics and chooses a path that will take the least time to reach the swimmer. Which of the paths shown in the figure does the lifeguard take? SSM
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