The acceleration formula is
[tex]a=\frac{v^2}{r}[/tex]Where v = 10 m/s and r = 10 m. Let's use these values to find the acceleration.
[tex]\begin{gathered} a=\frac{(10\cdot\frac{m}{s})^2}{10m}=\frac{100\cdot\frac{m^2}{s^2}}{10m} \\ a=10\cdot\frac{m}{s^2} \end{gathered}[/tex]