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近年来,高考物理试题日益重视对同学们综合运用所学知识分析和解决问题等方面的能力的考查,出现了一些需要根据物理情境的设置灵活运用所学的概念和规律进行求解的物理新题型。对于这类试题,许多同学都存在着诸多的不适应。例如:某质点做匀变速直线运动,连续经过A、B、C三个点,质点在AB段的平均速度为3 m/s,在BC段的平均速度为6 m/s,且AB=BC,试求出质点在A、B、C三点的瞬时速率。
In recent years, the physical examination of college entrance examination has paid increasing attention to the ability of students to comprehensively use the knowledge they have learned to analyze and solve problems. There are some new physical questions that need to be solved according to the concepts and laws learned from the setting of the physical situation type. For such questions, many students there are many not suited. For example, if a certain point is uniformly moving at a straight line and passing through A, B, and C continuously, the average particle velocity in section AB is 3 m / s, the average velocity in section BC is 6 m / s, and AB = BC , Try to find the mass point in the A, B, C instantaneous rate of three points.