Question

An object travels in circular path of radius 'r' . Find the distance and displacement for two complete revolutions.

Answer 1

displacement is zero and distance is 4pi r

Answer 2

for one revolution total distance covered by an object is equals to 2πr hence for 2 revolutions it is equals to 2*2πr .(π=3.14) .displacement is the least distance between two points. here object after completing two revolutions come at the same point and the least distance between that 2 points is zero so displacement is zero and distance is 2*2πr