Alicia pushes her buggy at a constant speed of 2m/s. She sees a car pull out 8m in front of her. She slows down with a deceleration of 1m/s2. How long does it take her to stop?

The acceleration of cars in the United States is stated as a "zero to sixty" time, where vi is zero and vf is 60 miles per hour or 27 meters per second. The average rate of acceleration of all the ordinary cars I found was between 3 and 4 m/s2.