在天体运行及卫星运动问题中公式繁多、变量关系复杂,而速度和加速度对解决与万有引力相关的运动学和动力学问题非常关键.本文就与速度有关的问题进行研究.一、三个宇宙速度在教材中第一宇宙速度的定义是:人造卫星在地面附近绕地球做匀速圆周运动所必须具有的速度.它包含以下几 There are numerous formulas and complex relationships in the celestial body operation and satellite movement problems. Velocity and acceleration are critical to solve the kinematics and dynamics problems associated with gravitation. This paper studies speed-related issues. One, three cosmic velocities In the textbook, the definition of the first cosmic velocity is: the speed that the artificial satellite must have around the earth to make a uniform circular motion around the earth. It contains the following