ANSWER:
It is possible as long as the starting point is the same as the end point.
STEP-BY-STEP EXPLANATION:
Yes, it can be possible.
If displacement is zero,, i.e. initial and final point of motion is some then, average velocity will be zero, but average speed will not be zero.
Consider the following move:
Return back to A is some time interval further so:
[tex]\begin{gathered} V_{\text{ave}}=\frac{0}{2+2}=0\text{ m/s} \\ S_{\text{ave}}=\frac{240+240}{2+2}=\frac{480}{4}=120\text{ m/s} \end{gathered}[/tex]
