(Solution) - Starting from rest a bus increases speed at constant acceleration -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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Pages: 5 Words: 1375

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Starting from rest, a bus increases speed at constant acceleration a1, then travels at constant speed vm and finally brakes to a stop at constant acceleration a2 (a2 < 0). It took 4 minutes to travel the 2 miles between stop C and stop D and then 3 minutes to go the 1.4 miles between stop D and stop E.
a. Sketch the graph of the velocity v as a function of time 0 ? t ? 7.
b. Find the maximum speed vm.
c. If a1 = -a2 = a, evaluate a.