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A rocket ship at rest in space gives a short blast of its engine, firing 47...

A rocket ship at rest in space gives a short blast of its engine, firing 47 kg of exhaust gas out the back end with an average velocity of 530 m/s.
(a) What is the change in momentum of the rocket during this blast?

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Answer #1

Solution)

Initial velocity, u=0 (since at rest)

Mass, m=47 kg

Final Velocity, v=530 m/s

Part a)

Change in momentum, delta P= m(v-u)=47 kg(530 m/s -0)

Delta P= 24910 kg.m/s (Ans)

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