Halliday, Resnick & Walker — Motion Along a Straight Line: Problem 74

A pilot flies horizontally at 1300 km/h, at height h = 35 m above initially level ground. However, at time t = 0, the pilot begins to fly over ground sloping upward at angle \(\theta = 4.3^{\circ}\) (Fig. 2.26). If the pilot does not change the airplane’s heading, at what time t does the plane strike the ground?