Q 2. Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?
When the total distance travelled by the object is equal to the displacement, the magnitude of average velocity will be equal to the average speed. Average speed is the total distance upon time taken, whereas average velocity is the total displacement upon time taken.
When an object moves alog a straight path without change in its direction the average velocity of on abject is equal to its average speed