JEE Main · 2018 · 08 Apr 2018 · Offline · Kinematics

All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up.

(A)(see structure)
(B)(see structure)
(C)(see structure)
✓ Correct
(D)(see structure)

Answer: (C)

Solution

All four graphs are meant to describe one and the same motion, so their starting conditions must agree. Three of them begin with a non-zero slope, signalling a non-zero initial velocity, while the odd one begins with zero slope, implying zero initial velocity. That disagreement in the initial velocity is what makes the zero-slope graph the inconsistent representation.

JEE Main · 2018 · 08 Apr 2018 · Offline · Single correct option

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