Verified Answer :

Newton's second law states: \(F=m*a\)

F stands for force
m stands for mass
a stands for acceleration

Get a alone.

\(\frac{F}{m}=a\) or \(a=\frac{F}{m}\)

Plug in the values you have.

\(a=\frac{25N}{12kg}\)

This gives:

\(a = 2.5\frac{m}{s^2}E\)