Application Of Derivatives

\(A\) rod \(A B, 13\) feet long moves with its ends \(A\) and \(B\) on two perpendicular lines \(O X\) and \(O Y\) respectively. When \(A\) is 5 feet from \(O\), it is moving away at the rate of \(3 \mathrm{feet} / \mathrm{sec}\). At this instant, \(\mathrm{B}\) is moving at the rate