Concept:Distance is a scalar indicating the total path covered, while displacement is a vector indicating the shortest straight line from start to finish. If an object returns to its exact starting point, displacement is zero.
Solution:- In pure circular motion, when an object completes one full revolution, it returns exactly to its starting point.
- Its displacement (final position - initial position) is precisely zero.
- Its distance traveled is the circumference \( 2\pi r \), which is non-zero.
Why other options are incorrect:- Linear motion strictly in one direction yields distance = displacement.
- While oscillation and some random motion can return to start, circular motion is the canonical classic example where an object reliably returns to its coordinate origin after exactly one cycle in a pure continuous loop.
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