Airplane and Earth’s Rotation

An airplane exists on Earth. It has the same motion as the surface of the Earth, including the Earth’s rotating motion. The motion of the airplane itself is measured relative to the surface of the Earth.

Flat-Earthers think that due to Earth’s rotation, an airplane should not be able to fly east or land. They are wrong. The speed of an airplane is relative to the surface. It retains the motion of the Earth and does not need to chase Earth’s rotation.

Newton’s first law of motion says:

“An object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.”

When the airplane is parked on the ground, it already in motion at the same velocity as the rest of the Earth. During take-off, the airplane would retain the speed of the Earth’s surface, and only changes its speed relative to the surface.

The atmosphere is part of the Earth and practically moving at the same speed as Earth’s surface. The airplane propels itself against Earth’s atmosphere. It is moving relative to the atmosphere, and consequently, Earth’s surface.