You drive in a straight line at 12 m/s for 1.5 min, then stop for 3.5 min, then drive at 15 m/s for 2.5 min. (a) plot x(t). (b) find average velocity for entire drive. 1. a stone is thrown vertically up and reaches maximum height 10 m. (a) find initial speed of the stone. (b) plot the graph of velocity versus time for the entire flight. 2. sition a bedy is given by x=34+2f' for tue osts a) pcof x (t); ) find average ve locity e's