181. The position–time graph of a moving object is shown below as a parabola. In the time interval 0 to $8\,\text{s}$, what are the magnitude of average velocity and average speed in SI? [Figure: A parabolic position-time graph with $x(\text{m})$ on the vertical axis and $t(\text{s})$ on the horizontal axis. The curve reaches a maximum of 24 m, passes through 16 m, and returns to 0 at $t = 8\,\text{s}$.]
[(1)] 1 and zero
[(2)] 2 and zero
[(3)] 1 and 1
[(4)] 2 and 2
\textbf{181.} The position–time graph of a moving object is shown below as a parabola. In the time interval 0 to $8\,\text{s}$, what are the magnitude of average velocity and average speed in SI?
\textit{[Figure: A parabolic position-time graph with $x(\text{m})$ on the vertical axis and $t(\text{s})$ on the horizontal axis. The curve reaches a maximum of 24 m, passes through 16 m, and returns to 0 at $t = 8\,\text{s}$.]}
\begin{enumerate}
\item[(1)] 1 and zero
\item[(2)] 2 and zero
\item[(3)] 1 and 1
\item[(4)] 2 and 2
\end{enumerate}