You are standing on the ground at the origin of a coordinate system. An airplane flies over you with constant velocity parallel to the x axis and at a constant height of 9.00 103 m. At t = 0, the airplane is directly above you so that the vector leading from you to it is 0 = 9.00 103 m. At t = 30.0 s the position vector leading from you to the airplane is 30 = (7.46 103 + 9.00 103) m as suggested in the figure below. Determine the magnitude and orientation of the airplane's position vector at t = 75.0 s. 1)find the magnitude 2) directi