Predict/Calculate An expectant father paces back and forth,

producing the position-versus-time graph shown in HGURE $2-32$

Without performing a calculation, indicate whether the father's

velocity is positive, negative, or zero on each of the following seg-

ments of the graph: (a) $\mathrm{A},$ (b) $\mathrm{B},$ (c) $\mathrm{C}$ , and (d) D. Calculate the

numerical value of the father's velocity for the segments (e) A, (f) B,

(g)C, and (h) $\mathrm{D}$ , and show that your results verify your answers to

parts $(a)-(d)$