Rocket Quiz

Question: A fully fueled rocket weighs 80,000 lb before it is launched. During launch the exhaust velocity is ft/sec and the mass flow rate at which the gases are exhausted is slugs/sec. (The exhaust velocity and exhaust rate do not vary and assume there is no air resistance). What is the total upward force when the rocket has burned 40,000 lb of fuel? Your Answer: Correct Answer:

Based on the velocity and mass flow rate given in the question, calculate the total force acting on the rocket. Enter your answer in the text box designated as "Your Answer". Clicking on the "Check It!" button will reveal the correct answer in the "Correct Answer" text box. If "Your Answer" matches the "Correct Answer", you should see a successful launch animation on the right hand side of your screen. If it doesn't match, an unsuccessful launch animation will appear and you will be asked to try again. Clicking on the "Try Again" button will generate a new exhaust velocity and mass flow rate. If you need help, follow the sample problem.