A car starts from rest, then accelerates at a constant rate over a distance of 55 m. It then immediately decelerates at a constant rate over a distance of 86 m. The entire trip lasts a total duration of 12.3 s. What were the magnitudes of the car s accelerations for the speedup and slowdown stages respectively?     4.78 m/s^2, then 3.06 m/s^2     4.47 m/s^2, then 6.99 m/s^2     1.86 m/s^2, then 1.86 m/s^2     6.99 m/s^2, then 4.47 m/s^2

College Physics
11th Edition
ISBN:9781305952300
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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  1. A car starts from rest, then accelerates at a constant rate over a distance of 55 m. It then immediately decelerates at a constant rate over a distance of 86 m. The entire trip lasts a total duration of 12.3 s. What were the magnitudes of the car s accelerations for the speedup and slowdown stages respectively?
       
    4.78 m/s^2, then 3.06 m/s^2
       
    4.47 m/s^2, then 6.99 m/s^2
       
    1.86 m/s^2, then 1.86 m/s^2
       
    6.99 m/s^2, then 4.47 m/s^2
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