具体是：A space vehicle made up of two parts is travelling at 23

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具体是：
A space vehicle made up of two parts is travelling at 230 m/s
the mass of partA is 450kg,the mass of partB is 1200 kg.
an explosion causes the 450 kg part to separate and travel with a final velocity of 280 m/s
What was the magnitude of the impulse on the 1200kg part during the seperation?

the magnitude of the impulse of the sapcce vehicle before explosion （爆炸前宇宙飞船的动量）：(450+1200)*230= 379 500 Nm
the magnitude of the impulse of A after explosion（爆炸后A的动量）：
450*280=126 000Nm
the magnitude of the impulse of B after explosion（爆炸后B的动量）：379500-126000=253500 Nm

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