Explain this common observaion clearly. IF you look out of thej window of a fast moving train, the nearby trees, housees etc. seem to move rapidly in a direcion to the train's motion, but the distant objects (hill tops, the moon, the stars etc.) seem to be stationary.

Explain this common observaion clearly. IF you look out of thej window

1.	Explain this common observaion clearly. IF you look out of thej window of a fast moving train, the nearby trees, housees etc. seem to move rapidly in a direcion to the train's motion, but the distant objects (hill tops, the moon, the stars etc.) seem to be stationary.
Answer» Solution :The line JOINING the object to the eye is called the line of sight. When a train moves rapidly, the line of sight of a near bytree changes its direction of motion rapidly. Therefor, the TREES appear to run in opposite direction. On the contrary, the line of sight of far off OBJECTS (hill tops, the moon, the STARS etc.) does not change its direction so much due to extremely large distance from the eye. HENCE, distant hill tops. moon, the stars etc. appear stationary.