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 fixed height of 7.60 x 103 m. At time t = 0 the airplane is directly above you, so that the vector leading from you to it is P0 = (7.60 x 103 m) ˆj. At t" 30.0 s the position vector leading from you to the airplane is P30 = (8.04 x 103 m) ˆi + (7.60 x 103 m) ˆj. Determine the magnitude and orientation of the airplane’s position vector at t = 45.0 s.