It's a lazy day. You and your dog, Shamus, are both resting. Shamus is right next to you (you can assume you start in the same place). Suddenly Shamus realizes a door is open, and he takes off running down the street. His acceleration is 2.2 m/s² until his speed is 3.2 m/s. He continues his run at this constant speed for 20 seconds. Then he sees something of interest and decelerates at a rate of 0.5m/s² until he stops (or is stopped). Five seconds after Shamus started running, start to chase after him. If your acceleration is 1.2m/s², how long do you chase after Shamus before catching him? Assume that Shamus (and you) move in a straight line.

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