Final answer:
The point of view that the airplane is stationary and the Earth is moving beneath you is valid, influenced by the observer's frame of reference.
Step-by-step explanation:
The point of view that the airplane is stationary and the Earth is moving beneath you is valid, influenced by the observer's frame of reference. In reality, the airplane is in motion, but this motion might not be apparent to the passengers inside the plane. This is because the passengers inside the plane are also moving at the same velocity as the plane, so they do not feel any relative motion.