A race car starts from rest, accelerates at a constant rate of
3.8 m/s^2 for 23s, and then brakes (decelerates) at a constant rate
of 5.6 m/s^2 (magnitude) until it comes to a stop. (a) Find the
total distance traveled by the car before coming to rest. (b) Draw
a graph of the velocity vs. time, and indicate numerical values of
any “special points”on the graph.