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範例:一維等速的獨立系統(一)

兩物體質量各為1kg,2kg,聯在一起,同以2m/s之速度向右進行。兩者間有一彈簧,將兩物體彈開,彈開後其中1kg物體以1m/s之速度向左運動,(A)二物體的質心系統在彈開前、後受外力均為零(B)系統在彈開前、後雖各別物體的速度變化,但質心速度不變仍為2m/s向右進行(C)總動量(質心動量)彈開後大於彈開前(D)彈開後另一物體的速度為4m/s


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Posted in 多質點系統的質心運動.

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