A dragster comes off the start line with an acceleration of 4 m/s2. The acceleration increases uniformly from 4 m/s2 to 10m/s2 over 3 seconds, then remains constant to the finish line (500m). Find: a) the acceleration as a function of time (make a graph) b) the velocity as a function of time c) the distance as a function of time d) the time at which it finishes