(a) Amy is delivering a pizza to Marks house. She drives at a constant speed toward the house until she Hits a traffic jam and has to stop for several minutes. After, she starts up again and drives at a faster speed than before. (b) Kareem begins his jogging workout by running faster and faster for about a minute. Once he hits a comfortable pace, he runs at that pace for several minutes. Then he gradually slow down to stop over the next few minutes.