Which of the following statement is correct?

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When a particle returns to its starting point, its displacement is non-zero.

Average velocity is the displacement divided by time interval.

When acceleration of particle is constant, then motion is called as non-uniformly accelerated motion.

The magnitude of average velocity is the average speed.

answer is B.

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Detailed Solution

Statement given in option (b) is correct but the rest are incorrect and these can be corrected as, In general, average speed is not equal to magnitude of average velocity. It can be so, if the motion is along a straight line without change in direction. When acceleration of particle is not constant, then motion is called as non-uniformly accelerated motion. Displacement is zero, when a particle returns to its starting point.

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