生活中我们或许会遇到这样的问题,当一个人或东西向你撞来时,情急之下的你第一反应或许会将你手中的箱子或其他物品推向对方,其实这第一反应蕴含了丰富的物理原理.下面我们就具体来分析一下蕴含在此类问题中的物理原理吧.在此类相互作用中,我们需要将一些条件理想化(比如地面光滑),忽略一些次要因素,才能抽象出隐含在其中的规律,这也是我们挖掘物理规律常用的方法. In life, we may encounter such a problem, when a person or something hit you, your first reaction may be your hands in the box or other items to each other, in fact, this first reaction contains A wealth of physical principles below we specifically analyze the implication of this kind of problem in the physical principle of bar in such an interaction, we need to idealize some of the conditions (such as the ground smooth), ignore some minor factors, In order to abstract out the law implied in it, which is also our common method of mining the laws of physics.