you missing the key point

the 'V' in your case should be the 'change of speed during the period of the 2 objects are touching', NOT the speed!, also not the speed that changed after they seprated.

所有跟帖： 

• "俩车受到F相同", 没错；但双方司机受到的力却不同，软的一方受到的力大。 -DeepCreek- ♂ (0 bytes) () 04/05/2010 postreply 16:54:05

• 你不是说完美的非弹性碰撞吗？那么完美的话，加速度是相同的 -杀雨- ♂ (345 bytes) () 04/05/2010 postreply 17:42:03

• 我就知道你会引用牛顿力学定律：作用力=反作用力! 但我懒得再作解释了。 -DeepCreek- ♂ (272 bytes) () 04/05/2010 postreply 19:27:09

• 一盆浆糊 -DeepCreek- ♂ (0 bytes) () 04/05/2010 postreply 20:07:38