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Which of these is not comprised in total mass of the rocket?

Which of these is not comprised in total mass of the rocket? Correct Answer Material mass

While computing the total mass of the rocket, propellant mass, structural mass and payload mass are all incorporated. Material mass comes under Structural mass itself.

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S1:When a satellite is launched, the rocket begins by going slowly upwards through the air.
P :However, the higher it goes, the less air it meets.
Q :As the rocket goes higher, it travels faster.
R :For the atmosphere becomes thinner.
S :As a result there is less friction.
S6:Consequently, the rocket still does not become too hot.

The Proper sequence should be:
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