a boy walks around a circular track of radius 14 m,such that after 2 minutes he is diametrically opposite to the starting point . what will be his distance and displacement..
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Explanation:
Displacement is a vector quantity whose magnitude is the shortest distance between initial and final positions while the distance is the length of the path followed between the initial and final positions.
After completing two rounds, the object comes back to its initial position, so the displacement is zero. The length of the path followed is two times the circumference of the circular path. So the distance covered by the object in two rounds is
s=2×2πr
=4×227×14
=176m