Question

Under what condition is the magnitude of average velocity of an object equal to its average speed?

Answer 1

We know $averagespeed=\frac{totaldistance}{totaltime}$ and $averagespeed=\frac{totaldisplacement}{totaltime}$
Therefore, the magnitude of average velocity of an object is equal to its average speed when the displacement of the object is equal to the distance covered by it in a given time interval. This happens when an object moves along a straight line in the same direction (without turning back).