The propulsive power of the rocket is (where v1 = Jet velocity, and v2 = Air-craft velocity)

• A. <img src="/_files/images/mechanical-engineering/compressors-gas-dynamics-and-gas-turbines/378-148-1.png">
• B. <img src="/_files/images/mechanical-engineering/compressors-gas-dynamics-and-gas-turbines/378-148-2.png">
• C. <img src="/_files/images/mechanical-engineering/compressors-gas-dynamics-and-gas-turbines/378-148-3.png">
• D. <img src="/_files/images/mechanical-engineering/compressors-gas-dynamics-and-gas-turbines/378-148-4.png">