An aeroplane moving horizontally at a speed of $200\mathrm{ }\mathrm{m }{\mathrm{s}}^{-1}$ and at a height of $8x{10}^{\mathrm{3 }}\mathrm{m}$ is to drop a bomb on a target. The horizontal distance from the target should the bomb be released is (Take $\mathrm{g}=10\mathrm{ }\mathrm{m }{\mathrm{s}}^{-2}$)