2 Fig. 2 shows an acceleration-time graph modelling the motion of a particle.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{bdbebc7f-0cb1-4203-8058-7614ba291508-2_684_1068_408_586}
\captionsetup{labelformat=empty}
\caption{Fig. 2}
\end{figure}
At \(t = 0\) the particle has a velocity of \(6 \mathrm {~m} \mathrm {~s} ^ { - 1 }\) in the positive direction.
- Find the velocity of the particle when \(t = 2\).
- At what time is the particle travelling in the negative direction with a speed of \(6 \mathrm {~m} \mathrm {~s} ^ { - 1 }\) ?