Question

a plane flies toward the airport. from the perspective of a person inside the airport, which objects are moving?
both the plane and the airport are moving.
only the plane is moving.
only the airport is moving.

Explanation:

In physics, motion is relative. When considering the perspective of a person inside the airport (who is at rest relative to the airport), the airport itself is stationary from their viewpoint. The plane is approaching the airport, so it is in motion relative to the person (and the airport).

Answer:

Only the plane is moving.