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《课程标准》对“运动的快慢”这节内容的要求是:用速度描述物体运动的快慢,通过实验测量物体运动的速度,用速度公式进行简单的计算.根据课标的要求,本节内容主要的考点如下:考点二:比较物体运动快慢的方法怎样比较物体运动的快慢,生活中通常有两种方法:①在相同时间内比较物体通过的路程,通过路程长的运动得快:②在相同的路程内比较物体运动所需的时间,时间短的运动得快.我们在奥运会等体育比赛中看到的都是用第二种方法来比较运动快慢的.但在物理上经常用的是第一种方法.例1日常生活中我们常用两种方法来比较物体
The requirements of this section of the Course Standard for speed and speed of exercise include: Describing the speed of an object in terms of speed, measuring the velocity of an object experimentally, and simply calculating it using the speed formula. The main test sites are as follows: Test site two: Comparison of the speed of the object How to compare the speed of movement of objects, there are usually two ways of life: ① at the same time through the comparison of objects through the long journey through the movement faster: ② In the same distance compared to the time required for the movement of objects, short time faster movement.We have seen in the Olympic Games and other sports are used in the second method to compare the speed of movement.But often used in physics Is the first method. Example 1 In everyday life we often use two methods to compare objects