From the origin to circle a, the train moves at constant speed in the positive x

Question

From the origin to circle a, the train moves at constant speed in the positive x-direction for the first 4.00 s, because the position vs. time curve is rising steadily toward positive values. From circle a to circle b, the train stops at x = 4.00 m for 4.00 s. From circle b to circle c, the train travels at increasing speed in the positive x-direction.

Question What time would it take to produce the displacement represented by a vertical line from 6 m to 8 m in a graph of position vs. time?
It would take 0 s.
It would take 0.75 s.
It would take 2 s.
It would take 2.67 s.

Could an object actually move that distance in that amount of time?
Yes or No

Explanation / Answer

Where is the graph???? Please provide graph. Thanks!!!

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