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May 31, 2022 at 16:09 comment added The Photon Also your second sentence says you would "not even be able to know you are traveling at constant speed" but then later sentences imply that you can detect accelerations (but not know which direction they are in relative to velocity).
May 31, 2022 at 16:08 comment added The Photon In a real train it's very easy to tell the difference between acceleration and deceleration from the sound of the wheels on the tracks. Lack of auditory cues was not part of the problem statement.
May 30, 2022 at 20:40 history answered ludz CC BY-SA 4.0