refer to the link, can anyone slove the question? thanks
http://i649.photobucket.com/albums/uu213/cyn001/2-1.jpg
a mechanic question
2009-11-08 10:27 am
回答 (1)
2009-11-08 4:49 pm
✔ 最佳答案
By conservation of momentum:m1v1=-m2v2By conservation of energy:
圖片參考：http://imgcld.yimg.com/8/n/HA00028060/o/700911080017813873407200.jpg
第3行約到係因為m1v1=-m2v2
-m2v2+m2v2=0
參考: myself
收錄日期: 2021-04-25 23:15:27
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091108000051KK00178