Physics, 30.03.2020 18:00, 902coo

An airplane, flying horizontally at an altitude of 3 miles, passes directly over an observer. If the constant speed of the airplane is 240 miles per hour, how fast is its distance from the observer increasing 45 seconds later? Hint: Note that in 45 seconds (three fourths times StartFraction 1 Over 60 EndFraction equals StartFraction 1 Over 80 EndFraction hour ), the airplane goes 3 miles.

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An airplane, flying horizontally at an altitude of 3 miles, passes directly over an observer. If the...