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If you lok out of the window of a fast m...

If you lok out of the window of a fast moving train the nearby trees, houses etc,. Seem to move rapidly in a direction opposite to the train's motion, but the distant objects seem to be stationary. Why?

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A nearby object like houses trees etc subtend a large angle at our eye. Since the train moves fast the angle also changes quickly. So they appear to move rapidly in a directions opposite to the train due to relative motioni. The distant objects subtend small angle and the change is small as the object is fat away. So they appear to be stationary.
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