[問題] 請教南一中教甄題
請教南一中教甄第16題 題目如下
http://i.imgur.com/YVALmTd.jpg

這是個人的解法
質子和新的粒子質量差9倍
考慮質子的運動用雙星運動來解
解出來似乎還是不正確...
http://i.imgur.com/UsEhOBR.jpg

有請高手多多指教了...
感謝!
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