Same chapter2 marksDifficulty: Easy
Distinguish between distance and displacement.
Motion in One Dimension
2 marksDifficulty: Easy
Distinguish between speed and velocity, and give one example where the speed is constant but the velocity is changing.
Original Khojo Papers practice question — not from a past board paper.
Answer
Speed is the rate of change of distance and is a scalar; velocity is the rate of change of displacement and is a vector, so it has direction as well as magnitude. A body moving in a circle at a steady rate has a constant speed but a continuously changing velocity, because its direction changes at every instant.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A change of velocity means an acceleration, which is why circular motion is accelerated motion.
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