(Solved): Emmy is standing on a moving sidewalk that moves at \( +2 \mathrm{~m} / \mathrm{s} \). Suddenly, sh ...

Emmy is standing on a moving sidewalk that moves at \( +2 \mathrm{~m} / \mathrm{s} \). Suddenly, she realizes she might miss her flight, so begins to speed up, but then she hears over the PA system that her filght is delayed. The acceleration versus time graph shows Emmy's acceleration during the 5 s time interval in which all of the events occur. In the velocity versus time graph, construct a plot of Emmy's velocity over this same time period. Assuming all the values given are exact, what is Emmy's velocity at a time of \( 3.71 \mathrm{~s} \) ? Enter your answer to at least three significant digits.