While travelling in a train, it appears that the trees near the track are moving whereas co-passengers appear to be stationary. Explain the reason.
While sitting in a moving train, the trees appear to be moving in the opposite direction because their position is changing with respect to us. While the position of co-passengers appears to be in a stationary position since they are not changing with respect to us. It can be better understood by Einsteins theory of relativity.