If V is the jet velocity Vo is the Vehicle velocity, the propulsive efficiency of a rocket is given by:

\[\frac{\left( {{\text{V}}_{\text{0}}}\text{/}{{\text{V}}_{\text{1}}} \right)}{1+{{\left( \frac{{{V}_{0}}}{{{V}_{1}}} \right)}^{2}}}\]

\[\frac{2\,\left( {{\text{V}}_{\text{0}}}\text{/}{{\text{V}}_{\text{1}}} \right)}{1+\left( \frac{{{V}_{0}}}{{{V}_{1}}} \right)}\]

\[\frac{{{V}_{0}}}{{{V}_{0}}+{{V}_{1}}}\]

\[\frac{{{V}_{1}}}{{{V}_{0}}+{{V}_{1}}}\]

If V is the jet velocity Vo is the Vehicle velocity, the propulsi

1.	If V is the jet velocity Vo is the Vehicle velocity, the propulsive efficiency of a rocket is given by:
A.	\[\frac{2\,\left( {{\text{V}}_{\text{0}}}\text{/}{{\text{V}}_{\text{1}}} \right)}{1+\left( \frac{{{V}_{0}}}{{{V}_{1}}} \right)}\]
B.	\[\frac{\left( {{\text{V}}_{\text{0}}}\text{/}{{\text{V}}_{\text{1}}} \right)}{1+{{\left( \frac{{{V}_{0}}}{{{V}_{1}}} \right)}^{2}}}\]
C.	\[\frac{{{V}_{0}}}{{{V}_{0}}+{{V}_{1}}}\]
D.	\[\frac{{{V}_{1}}}{{{V}_{0}}+{{V}_{1}}}\]
Answer» B. \[\frac{\left( {{\text{V}}_{\text{0}}}\text{/}{{\text{V}}_{\text{1}}} \right)}{1+{{\left( \frac{{{V}_{0}}}{{{V}_{1}}} \right)}^{2}}}\]

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If V is the jet velocity Vo is the Vehicle velocity, the propulsive efficiency of a rocket is given by:

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