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The velocity of a point moving along the -axis is  units per second.

  1. What was the average velocity over seconds?

  2. During the first seconds, what is the total distance the point traveled?

  3. What was the point's total displacement over seconds?

  4. What accounts for the large difference between the answers to parts (b) and (c)?

Graph the velocity function to see wether or not the point changes direction in the given interval. If it does, the integral needs to be broken into parts.