Question

Which of the following graphs cannot possibly represent one dimensional motion of a particle?

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i), (ii) and (iii)
• D. All four

Answer 1

Answer: (D)

All four

Answer 2

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 direction 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.