An automobile is traveling on a long, straight highway at a steady 75.0 mi/h when the driver sees a wreck 180 m ahead. At that instant, she applies the brakes (ignore reaction time). Between her and the wreck are two different surfaces. First there is 140 m of ice, where the deceleration is only 1.30 m/s2 . From then on, it is dry concrete, where the deceleration is a more normal 7.00 m/s2 . a)What was the car’s speed just after leaving the icy portion of the road? b)What is the total distance her car travels before it comes to a stop? c) What is the total time it took the car to stop?