\large KE=\frac{1}{2}\cdot m\cdot v^2 \large E_{Total}=GPE+KE \large GPE=m\cdot g\cdot h \large g=10\frac{m}{s^2}

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.