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【多选题】
下列对于碰撞的理解正确的是 ( )A.
碰撞是指相对运动的物体相遇时，在极短时间内它们的运动状态发生了显著变化的过程
B.
在碰撞现象中，一般内力都远远大于外力，所以可以认为碰撞时系统的总动量守恒
C.
如果碰撞过程中机械能也守恒，这样的碰撞叫做非弹性碰撞
D.
微观粒子的碰撞由于不发生直接接触，所以不满足动量守恒的条件，不能应用动量守恒定律求解
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