2-14.  In Figure 2-24, the positions of three travelers A, B, and C are plotted against clock reading t over a 25-s time interval.

a.  

List these travelers in rank order of their velocity during this time interval, starting with the value (lowest or most negative) that would occur furthest to the left on a real number line. Make sure to indicate equalities if there are any.

b.  

List these travelers in rank order of their speed during this time interval, starting with the value (lowest or most negative) that would occur furthest to the left on a real number line. Make sure to indicate equalities if there are any.

Figure 2-24  Problem 2-14