Can we calculate average velocity when we just know the distance covered? For example, when a car moves with a certain acceleration for a distance $u$ then it moves with a constant velocity for a distance $2u$ and at last it deaccelerates for a distance $3u$.
I tried to solve it by taking the intervals of time $T_0$ to $T_1$ for which the car accelerates, then $T_1$ to $T_2$ for which it moves with constant velocity and at last $T_2$ to $T_3$ for which it decelerates and finally comes to rest.
But that doesnt help. I do not have any idea about the intervals of time. So how can I compute the average velocity? Is there some other way to compute the average velocity?