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An automobile is traveling on a long, straight highway at a steady 75.0 m/h when the...

An automobile is traveling on a long, straight highway at a steady 75.0 m/h when the driver sees a wreck 170 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 1.20 m/s^2 . From then on, it is dry concrete, where the deceleration is a more normal 7.90 m/s^2 . What was the car’s speed just after leaving the icy portion of the road? What is the total distance her car travels before it comes to a stop? What is the total time it took the car to stop?

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genius_generous answered 6 months ago
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