An airplane of mass 28849 kg flies level to the ground at an altitude of 20 km with a constant speed of 161 m/s relative to the Earth. What is the magnitude of the airplane’s angular momentum relative to a ground

Explanation:

The angular momentum can be calculated as , where all (except m) are vectors. Since the plane flies horizontally, we will be left with , since the height h would be the perpendicular component to the velocity of any vector r from the ground to the plane. For our values:

pe = weightxheight = 2000x1000=2,000,000joules

answer: 31, 5556. 952 seconds