A mountain bike is travelling at 10 m/s when it jumps, and the wheels lose contact with the ground. The mass of the bike’s front wheel is 750 g and wheel’s radius is 35 cm. What is the angular momentum of the spinning wheel in the air at the moment that the bike leaves the ground?
An airplane of mass kg flies horizontally at an altitude of 10 km with a constant speed of 250 m/s relative to Earth. What is the magnitude of the airplane’s angular momentum relative to a ground observer directly below the plane?