Consider frictionless, incompressible flow of air over the wing of an airplane flying at \(200 \mathrm{~km} / \mathrm{hr}\). The air approaching the wing is at \(65 \mathrm{kPa}\) and \(-10^{\circ} \mathrm{C}\). At a certain point in the flow, the pressure is \(60 \mathrm{kPa}\). Calculate the speed of the air relative to the wing at this point and the absolute air speed.