1. A ball rolls up then down an incline. Sketch an acceleration diagram for the entire motion.
2. Sketch x versus t, v versus t, and a versus t graphs for the entire motion of a ball rolling up and then down an incline.
a. Use a coordinate system in which the positive x-direction is down the track.
b. Use a coordinate system in which the positive x-direction is up the track.
c. Can an object have a negative acceleration and be speeding up? If so, describe a possible physical situation and a corresponding coordinate system. If not, explain why not.
