The kinetic energies of two similar cars A and B are 100 J and 225 J respectively. On applying breaks, car A stops after 1000 m and car B stops after…

The kinetic energies of two similar cars A and B are $\displaystyle 100$ J and $\displaystyle 225$ J respectively. On applying breaks, car A stops after $\displaystyle 1000$ m and car B stops after $\displaystyle 1500$ m . If $\displaystyle F_A$ and $\displaystyle F_B$ are the forces applied by the breaks on cars A and B, respectively, then the ratio $\displaystyle F_A / F_B$ is