The propellant in a single stage sounding rocket occupies 60% of its initial ma

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The propellant in a single stage sounding rocket occupies 60% of its initial mass. If all of it is expended instantaneously at an equivalent exhaust velocity of 3000 m/s, what would be the altitude attained by the payload when launched vertically? [Neglect drag and assume acceleration due to gravity to be constant at 9.81 m/s2.]

Options:

A . 315 km

B . 335 km

C . 365 km

D . 385 km

Answer: Option D

-NA-

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