Per NCERT, why is AVERAGE SPEED over a finite interval always GREATER than or EQUAL to the magnitude of AVERAGE VELOCITY?
ASpeed is always negative
BAverage speed has units different from velocity
CBecause total path length is ≥ |total displacement|; equality holds only for unidirectional motion
DVelocity always exceeds speed
Answer & Solution
Correct answer: C. Because total path length is ≥ |total displacement|; equality holds only for unidirectional motion
Per NCERT §Summary point 1, path length ≥ |displacement| → avg speed ≥ |avg velocity|. Equality holds when motion is unidirectional.
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