A train is traveling due east at a speed of 2.9 m/s relative to the ground. A passenger is walking toward the front of the train at a speed of 21.9 m/s relative to the train. Directly overhead the train is a plane flying horizontally due west at a speed of 271.2 m/s relative to the ground. What is the horizontal component of the velocity of the airplane with respect to the passenger on the train?