Question

For an observer looking out through the windows of a fast moving train, the near by objects appear to

Answer 1

they appear to move back because of relative motion between the train and the surroundings...since the relative motion between the observer and the train is zero...
the observer moves in the same frame as the train with respect to the surroundings...that is the reason why those objects appear to move back as the observer finds himself at rest with respect to the train