Neglecting gravity,doubling the exhaust velocity from a single stage rocket initially at rest changes the final kinetic energy of the burnout stage by what factor? Assume all other variables,such as the mass of the rocket and the mass of the fuel,do not change.
A)It is the same.
B)It doubles.
C)It quadruples.
D)It increases by a factor of 1.693.

Question

Quizplus · Accepted Answer

The final kinetic energy of the burnout stage is proportional to the square of the exhaust velocity. Doubling the exhaust velocity quadruples the final kinetic energy, assuming all other variables remain constant.

Neglecting Gravity,doubling the Exhaust Velocity from a Single Stage Rocket