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Q.
Which of the following graphs cannot possibly represent one dimensional motion of a particle ?
Motion in a Straight Line
Solution:
All the four graphs are impossible.
(i) A particle cannot have two different positions at the same time.
(ii) A particle cannot have velocity in opposite directions at the same time.
(iii) Speed is always non-negative
(iv) Total path length of a particle can never decrease with time. Note : The arrows on the graphs are meaningless.
