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? (a)It would take 0 s. (b)It would take 0.75 s. (c)It would take 2 s. (d)It would take 2.67 s. Could an object actually move that distance in that amount of time? Yes or No

Explanation / Answer

Solution:

(a)It would take 0 s.

ass the verticle line in the position vs. time graph represents infinite velocity

it is not possible for any object.

No

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