The air flow through a jet engine is \(30 \mathrm{~kg} / \mathrm{s}\), and the fuel flow is \(1 \mathrm{~kg} / \mathrm{s}\). The exhaust gases leave with a relative velocity of \(610 \mathrm{~m} / \mathrm{s}\). Pressure equilibrium exists over the exit plane. Compute the velocity of the airplane if the thrust power is \(1.12 \times 10^{6} \mathrm{~W}\).