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乎抛运动可以看作水平方向的匀速直线运动和竖直方向的自由落体运动的合运动,因而处理平抛运动的基本思路就是将平抛运动分解为两个分运动。但是有的同学在处理此类问题时,由于对运动特点分析不当或过程不清,常会出现错误,下面举例分析。一、对抛体运动的特点分析不当造成错解例1小勇蹲在高为h的阳台外侧,贴近阳台面以水平初速度v0向空旷地方抛出一个小球,小球落地时的速度为v_t,竖直分速度为
The throwing motion can be seen as the horizontal motion of the uniform linear motion and the vertical free fall motion. Therefore, the basic idea of dealing with the throwing motion is to decompose the throwing motion into two partial motions. However, when some students deal with such problems, due to improper analysis of the characteristics of the movement or the process is unclear, often there will be mistakes, the following example analysis. First, the improper analysis of the characteristics of the projectile caused the wrong solution. Example 1 Xiaoyong was outside the balcony where the height was h, and a small ball was thrown close to the balcony surface at the horizontal initial velocity v0 to the empty place. The velocity of the ball when it landed was V_t, vertical speed is