Page No 100:
Question 1:
An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example.
+ 20 m = 80 m. However, his displacement is zero because the shortest distance between his initial and final position is zero.
Yes. An object that has moved through a distance can have zero displacement. Displacement is the shortest measurable distance between the initial and the final position of an object. An object which has covered a distance can have zero displacement, if it comes back to its starting point, i.e., the initial position.
Consider the following situation. A man is walking in a square park of length 20 m (as shown in the following figure). He starts walking from point A and after moving along all the corners of the park (point B, C, D), he again comes back to the same point, i.e., A.
In this case, the total distance covered by the man is 20 m + 20 m + 20 m
