A train is heading due west from St. Louis. At noon, aplane flying horizontally due
Chapter 4, Problem 99(choose chapter or problem)
A train is heading due west from St. Louis. At noon, aplane flying horizontally due north at a fixed altitude of4 miles passes directly over the train. When the train hastraveled another mile, it is going 80 mph, and the planehas traveled another 5 miles and is going 500 mph. Atthat moment, how fast is the distance between the trainand the plane increasing?
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