Question

An object moves along a circular path, when will its distance and displacement became the same?

Answer 1

The distance and displacement of the object moving along the circular path will only be the same when the object is at its initial position. That is when the distance and displacement both is zero. Otherwise they both will never be the same because distance is the total length of path travelled by the object where as displacement is the actual distance between the initial and final position of the object that is measured with a straight line.