2019高考物理一轮复习第一章《运动的描述与匀变速直线运动》微专题2追及相遇问题课件新人教版.ppt

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2019高考物理一轮复习第一章《运动的描述与匀变速直线运动》微专题2追及相遇问题课件新人教版.ppt_第1页
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1判断是否相撞,是比较后面减速运动的物体与前面物体的速度相等的位置关系,而不是比较减速到0时的位置关系 2匀速或匀加速运动的物体追减速运动的物体时,一定能追上如果追上时所用的时间大于物体减速到零的时间,则说明追上时被追的物体早巳停止运动 3若追赶过程中,物体运动性质发生改变,要判断在哪个运动段追上或追不上,谢谢观看,

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