在研究抛体运动问题时,已有的方法多是用纯物理方法构造运动学方程并运用一些物理定律进行研究.而解析几何中,不论是对抛物线的定义,还是解决抛物线的相关问题,准线都有着特殊而重要的作用.那么能否引入准线,利用其在抛物线中“统一、化简”的特殊作用来研究抛体运动问题呢? In studying the problem of projectile movement, most of the existing methods are to construct kinematic equations by using purely physical methods and to use some laws of physics to study them, and in analytic geometry, whether it is the definition of parabola or the parabola-related problems, Line has a special and important role.So whether the introduction of the quasi-line, using its special role in the parabola “unity, simplification ” to study the problem of prolapse movement?