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A car is observed to travel a total distance of 31000 m, starting and ending at...

A car is observed to travel a total distance of 31000 m, starting and ending at rest, over a duration of 3.42 s. Assuming the car accelerated at a constant rate to the midpoint of its journey and then decelerated at a constant rate the rest of the way, what was the magnitude of its acceleration? Express your answer in g s , where 1 g = 9.81 m/s^2.

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