What would cause the change in speed Is the motion cause the

来源：学生作业帮编辑：搜狗做题网作业帮分类：物理作业时间：2024/08/06 09:33:04

What would cause the change in speed Is the motion cause the change in speed
这个是一个实验report的结论提示，实验是关于 Inclined to Roll 的不知道要不要再具体讲一下试验、、
话说热心网友是不是都是匿名者难道是我认识的人、、、

这是不是初高中运动问题呢?什么引起了滚动小球的改变,小球本身运动并不是根本原因,运动问题要从受力分析入手,就因为小球受重力,手里分解,使小球受一个延斜面向下的力,因为滚动的摩擦很小,F=ma,所以演斜面向的合力使小球向下滚动,并且有加速度,Vt=Vo+at.所以是小球速度变化的根本是受力,最终表现为速度的增大.如果不是初高中问题,可以有更抽象的答案.
再问： 8年级，应该算是吧，讲的好像不太懂诶，可以简单点吗，最好是英文的
再答：呵呵还要英文的，精神可嘉，如果是八年级，是有些概念没学到.can you image a object falling from height,then what make the speed change?these are similar.just because of the gravity the object got,it rolled along the inclined plane,so what cause the change in speed is force, what you should do is to analyze what the forces are.for example,gravity
再问： Gravity? Is it can be the motion? Well , I have been handed my report、、、、
再答：运动问题必须分析受力，受力直接决定了物体的运动，所以不是运动本身使速度改变，而是力。以后你会学的，祝学习进步

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