问题特点:这类问题是以重力加速度为桥梁和纽带,将天体运动与自由落体、竖直上抛、平抛、简谐运动进行综合.考查的核心知识是万有引力定律、牛顿第二定律和运动学知识,相关知识是描述匀速圆周运动的物理量及其关系.解题方法:解决这类综合问题的基本思路是:(1)求物体在星球表面 Problem characteristics: This type of problem is based on gravity acceleration as a bridge and link, integrating celestial body motion with free fall, vertical throw, flat throw, and simple harmonic motion. The core knowledge examined is the law of universal gravitation, Newton’s second law, and sports. Knowledge, related knowledge is to describe the physical quantity and relationship of uniform circular motion. Problem solving method: The basic idea to solve this kind of comprehensive problem is: (1) Find objects on the surface of the planet