You are traveling on a plane. The velocity of the plane with respect to the air is 140 m/s due east. The velocity of the air with respect to the ground is 31.0 m/s at an angle of 30 degrees west of due north. What is the speed of the plane with respect to the gound? What is the heading of the plane with respect to the ground? (let 0 degree represent due north, 90 degree represents due east) How far east will the plane travel in 1 hour?