Multiple choice general knowledge

An object starts moving in a circular path of radius R. What is the distance and displacement respectively, if the object is at the diametrically opposite point from the starting point.

  1. 2 pi R , 2 pi R

  2. pi R , pi R

  3. pi R , 2R

  4. pi R , zero
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When an object moves to the diametrically opposite point on a circle, it travels half the circumference: distance = πR. Displacement is the straight-line distance from start to end, which is the diameter: 2R. Distance is path length traveled, displacement is shortest distance between points.

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