[tex]acceleration=\frac{\Delta v}{\Delta t}\\\\ \Delta t=2min=120s\\\\s=1,54km=1540m\\\\
acceleration=\frac{v_{f}-v_{i}}{\Delta t}\\\\
\Delta v=\frac{s}{t}\\
v_{f}-v_{i}=\frac{s}{t}\\
v_{f}=\frac{1540}{120}+9=21,83\frac{m}{s}\\\\
accleration=\frac{21,83-9}{120}=\frac{12,83}{120}=\boxed{0,107\frac{m}{s}}[/tex]
