Force:-
[tex]\\ \rm\hookrightarrow F_c=\dfrac{mv^2}{r}[/tex]
[tex]\\ \rm\hookrightarrow F_c=\dfrac{10(50)^2}{2}[/tex]
[tex]\\ \rm\hookrightarrow F_c=5(2500)[/tex]
[tex]\\ \rm\hookrightarrow F_c=12500[/tex]
Now using Newton's second law
[tex]\\ \rm\hookrightarrow A_c=\dfrac{F_c}{m}=\dfrac{12500}{10}=1250m/s^2[/tex]