A spectator seated 300 m away from the center of a circular track of radius 100 m
Chapter 3, Problem 44(choose chapter or problem)
A spectator seated 300 m away from the center of a circular track of radius 100 m watches an athlete run laps at a speed of 5 m/s. How fast is the distance between the spectator and athlete changing when the runner is approaching the spectator and the distance between them is 250 m? Hint: The diagram for this problem is similar to Figure 20, with r = 100 and x = 300.
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