You fly in a Boeing-747 westward, across the Atlantic Ocean from Amsterdam to Wa

Question

You fly in a Boeing-747 westward, across the Atlantic Ocean from Amsterdam to Washington, DC at about 900 km/hr. The effects of the Special Theory of Relativity, of course, cannot be detected at such speeds, but just as a thought experiment, which, if any, of the following statements is/are true?

During the flight, your walk from your seat to the restroom in the front of the aircraft is a little shorter than when the plane was docked at the flight terminal in Amsterdam.

You stand on a bathroom scale in the Boeing-747 during you flight and notice that you have gained a little weight.

You really want Frequent Flyer Miles calculated from a reference frame on the ground, not one attached to the Boeing-747.

From your window, you see another Boeing-747 heading east. The other Boeing-747 is shorter than the one in which you are flying.

If you do not adjust your watch and fly back from Washington to Amsterdam a few days later, your watch is again going to be in exact agreement with Amsterdam time.

During the flight, your walk from your seat to the restroom in the rear of the aircraft is exactly the same as when the plane was docked at the flight terminal in Amsterdam

Explanation / Answer

During the flight, your walk from your seat to the restroom in the front of the aircraft is a little shorter than when the plane was docked at the flight terminal in Amsterdam From your window, you see another Boeing-747 heading east. The other Boeing-747 is shorter than the one in which you are flying. If you do not adjust your watch and fly back from Washington to Amsterdam a few days later, your watch is again going to be in exact agreement with Amsterdam time

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