Air Is Flowing Through a Rocket Nozzle

question 5

Multiple Choice

Air is flowing through a rocket nozzle.Inside the rocket the air has a density of and a speed of 1.20 m/s.The interior diameter of the rocket is 15.0 cm.At the nozzle exit,the diameter is 2.50 cm and the density is 1.29 kg/m³.What is the speed of the air when it leaves the nozzle?

• A) 123 m/s
• B) 176 m/s
• C) 88.0 m/s
• D) 45.7 m/s
• E) 29.3 m/s