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ELI5: How can a rocket reach escape velocity of Earth (11.2 km/s) if chemical fuels allow exhaust velocity 4.5 km/s at most?
ELI5: How can a rocket reach escape velocity of Earth (11.2 km/s) if chemical fuels allow exhaust velocity 4.5 km/s at most? * /r/explainlikeimfive
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