Question

under what condition is the average speed is equal to the magnitude of the average velocity

Answer 1

Hy is your answer

If the motion of an object is along a straight line and in the same direction , the magnitude of displacement is equal to the total path length . In that case magnitude of a average speed is equal to the average velocity

Thanks
Hope it will help you

Answer 2

IF THE BODY IS IN RECTILINEAR MOTION