An automobile is traveling on a long, straight highway at a steady 76.0 mi/hwhen the driver sees a wreck 200 m ahead. At that instant, she applies the brakes (ignore reaction time). Between her and the wreck are two different surfaces. First there is 100 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 7.40 m/s2 Part A What was the car’s speed just after leaving the icy portion of the road? Part B What is the total distance her car travels before it comes to a stop? Part C What is the total time it took the car to stop?

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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An automobile is traveling on a long, straight highway at a steady 76.0 mi/hwhen the driver sees a wreck 200 m ahead. At that instant, she applies the brakes (ignore reaction time). Between her and the wreck are two different surfaces. First there is 100 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 7.40 m/s2

Part A What was the car’s speed just after leaving the icy portion of the road?

Part B What is the total distance her car travels before it comes to a stop?

Part C What is the total time it took the car to stop?

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