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2025年12月美国A卷 · 第 15 题

2025年12月美国A卷 · 原库模块 2 · Q15 原库参考解析

Before liftoff, one of a space shuttle's solid rocket boosters contained 478,000 kilograms (kg) of propellant. Exactly 17 seconds after liftoff, 392,949 kg of this propellant remained. On average, approximately how much propellant, in kg, did this solid rocket booster burn each second after liftoff?
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