论文部分内容阅读
大家知道:判断一个物体是运动还是静止。关键在于所选取的参照物,而参照物的选择又具有任意性,也就是说,除研究对象本身外,参照物可以是静止的,也可以是运动的,但是参照物的选择,对解运动学题目很重要,如果参照物选择得好,给解题带来很大的方便。很省时;如果参照物选择得不好,解题就很繁琐,很不方便,很耗时,
Everyone knows: to judge whether an object is moving or stationary. The key lies in the selected reference object, and the choice of the reference object is arbitrariness. That is to say, the reference object can be either static or motional in addition to the study object itself, but the choice of the reference object, the solution movement The subject is very important. If the reference object is selected well, it will bring great convenience to solving problems. Very time-saving; if the reference is not well selected, the problem is very tedious, inconvenient and time consuming.