A straight line is chosen as the x–axis with an origin O fixed on it.
Answer the following questions about position and displacement in one dimension.
(i) Distinguish between position and displacement. State any two points of difference.
(ii) Explain why displacement can take positive, negative, or zero values while distance is always non–negative. Base your answer on the idea of a chosen frame of reference.
(iii) Describe two different everyday situations in which an object covers a non–zero distance yet its displacement is zero. Justify your choice in each case.