Physicshard · Past Paper
A particle moves along a circle of radius R. In half a revolution, what is the ratio of distance to displacement?
Api : 2
B2 : pi
Cpi : 1
D1 : 2
✓ Correct Answer: A — pi : 2
Distance = pi*R. Displacement = 2R. Ratio = pi*R / 2R = pi / 2.
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