Body moves on coordinate line such that it has a position s=f(t)=t^2 - 4t + 3 on interval 0

Question

Body moves on coordinate line such that it has a position s=f(t)=t^2 - 4t + 3 on interval 0<t<5 with s meters t seconds

anonymous · Answer

I have this on a derivative assignment. I'm not entirely sure how to solve it. It wants the displacement during the given interval, the velocity of the interval, the speeds at left and right end points, the acceleration at left and right endpoints, and to know if the body changes directions. This wasn't covered in class. I already have the answers, I just don't know how they came to them.

anonymous · Answer

Never mind, got this figured out. It was just a matter of finding s' and then annotating the data at the beginning and end points of the interval, then diving the seconds by it's average speed to find the distance.