Explain clearly, with examples, the distinction between:
b) The magnitude of average velocity over an interval of time, and the average speed over the same interval. [Average speed of a particle over an interval of time is
defined as the total path length divided by the time interval].
Show in both (a) and (b) that the second quantity is either greater than or equal to the first. When is the equality sign true ? [For simplicity, consider one-dimensional
Since (AB + BC) > AC, average speed is greater than the magnitude of average velocity.
The two quantities will be equal if the particle continues to move along a straight line.