A tennis player moves in a straight line path as shown in Figure 3. Find the average velocity in the in intervals.

a) [tex]4\frac{\text{m}}{\text{s}}\\[/tex]
b) [tex]-1\frac{\text{m}}{\text{s}}\\[/tex]
c) [tex]-1\frac{\text{m}}{\text{s}}\\[/tex]
d) [tex]0[/tex]