Sarah got a speeding ticket. However an officer's radar gun was malfunctioning. The officer says that Sarah was going 25 m/s in a 20 m/s zone. She knows that she couldn't have been going that fast because she was only 160 m past a stop sign where the cop saw her come to a complete stop. However she says that her car has a maximum acceleration of 1.11 m/s^2. How can Sarah proves that her car is not capable of going 20 m/s in that short of distance.