A Rocket of Total Mass M and with Burnout Mass

question 70

Multiple Choice

A rocket of total mass M and with burnout mass 0.20M attains a speed of 3 400 m/s after starting from rest in deep space.What is the exhaust velocity of the rocket?

• A)6.8E+2 m/s
• B)2.1E+3 m/s
• C)1.7E+4 m/s
• D)2.2E+3 m/s
• E)1.1E+3 m/s