An airplanes flies at an altitude of 5 km where the atmospheric conditions are p = 0.53 atm and T = 255 K. By the time the sonic shock reaches an observer’s ears on the ground, the airplane reached a...

An airplanes flies at an altitude of 5 km where the atmospheric conditions are p = 0.53 atm and T = 255 K. By the time the sonic shock reaches an observer’s ears on the ground, the airplane reached a distance of 10 km to the left. Calculate the Mach number, Mach angle, and airplane speed (assume that the speed of sound is not changing much as it travels down from an altitude of 5 km).