(d) (15 points) Sketch the graphs of the acceleration, the velocity and the distance functions: s(t) = 13 - 3t2 - 10t; v(t) = 3t2 - 6t - 10 and a(t) = 6t - 6. Identify zeros, critical points, inflection points local and global minima and maxima of each function. What is happening with the body, physically, when s(t) = 0? How about when v(t) = 0?? What about when a(t) = 0