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【简答题】
运载火箭的最后一级以v 0 =7600m/s的速率飞行。这一级由一个质量为m 1 =290.0kg的火箭壳和一个质量为m 2 =150.0kg的仪器舱扣在一起。当扣松开后，二者间的压缩弹簧使二者分离。这时二者的相对速率为u=910.0m/s。设所有速度都在同一直线上，求两部分分开后各自的速度。
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