\(AB\) = Horizontal velocity \(×\) time available
\(AB = \,u \times \sqrt {\frac{{2h}}{g}} \)\( = 600 \times \frac{5}{{18}} \times \sqrt {\frac{{2 \times 1960}}{{9.8}}} \)\( = 3.33\,Km.\)
આપેલ : $1\, {ly}=9.46 \times 10^{15} \,{m},$ $\, {AU}=1.5 \times 10^{11}\, {m}$