平抛运动是最典型的曲线运动之一,对平抛运动知识的梳理,要抓住物体做曲线运动的共性特点,即从运动的条件、运动的性质、运动的分析方法和应用等方面进行总结。下面结合例子作一讨论。一、平抛运动的条件物体做曲线运动的条件是,物体受到的合外力与初速度的方向不在同一直线上。如果物体以初速度v。水平抛出,只受重力,物体将做平抛运动。由此可知,物体做平抛运 The flat throwing motion is one of the most typical curve motions. To sort out the smooth throwing motion knowledge, we must grasp the common characteristics of the object to do the curve motion, that is, from the conditions of the motion, the nature of the motion, the analysis method and application of the motion, etc. to sum up. The following is a discussion with examples. First, the condition of flat-throwing motion The condition of an object to make a curve motion is that the external force applied by the object is not on the same line as the direction of the initial velocity. If the object is at the initial velocity v. Throw horizontally, only by gravity, the object will do flat throw. It can be seen that the object is thrown at the same level