十一的时候,小凯和几个同学去过了一把过山车的瘾,那风驰电掣的感觉和有惊无险的刺激给他们留下了深刻印象。工作人员还为他们讲解了过山车的工作原理:“刚开始时,过山车是被机械装置的推力推上最高点的,但在第一次下行后,就再也没有任何装置为它提供动力了,过山车的运行轨道也再不会超过开始时最高点的高度。”回到学校后,他们借助下列装置探究了过山车运动过程中运动和力的关系。 Eleven, Xiao Kai and several classmates had been to a roller coaster addiction, the feeling of agility and scared stimulation left a deep impression on them. The staff also explained to them the working principle of the roller coaster: “At the beginning, the roller coaster was pushed to the highest point by the thrust of the mechanical device, but after the first descent, there was no device to power it anymore And the roller coaster tracks no longer go beyond the height at the very beginning. ”After returning to school, they explored the relationship between exercise and force during the roller coaster ride with the following equipment.