The school zone in front of your school has a posted speed limit of 25 mi/h, which is about 11 m/s. Let's examine the stopping of a car in several different situations. A.) The crossing guard holds up her stop sign, and the driver is paying attention well. The car moves at a constant rate of 11 m/s for 2.3 seconds while the driver reacts l, then slows down at a constant rate of -4.5 m/s^2. What is the stopping distance for the car in this situation?
B.) A child appears to be running into the street ahead. It takes 2.3 seconds for the driver to react and begin to brake, but this time at a rate of -7.5 m/s^2. What is the stopping distance for the car in this situation?
C.) The driver is looking at her phone and has a total reaction time of 4.6 seconds as the car is moving at a constant speed of 11 m/s. If the driver slams on her brakes and slows down at the rate of -8.2 m/s^2, what is the stopping distance for the car in this situation?