John left his home and walked three blocks to his school , as shown in the accompanying graph . what is one of the possible interpretation of the section of the graph from point b to point c ?

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.