Question

a point moves along circumsferenceof a circle of radious r when it completes eight rotationsits displacement is...???​

Answer 1

i would say that since displacement is considered as the DISTANCE from the first point (location) directly to the last point (location), if it completes 8 rotation, it will be ended at the SAME spot as it started. Since the point moves along the circumsference of a circle with radius r, the displacement is 0.