题目:(2005年理科综合能力测试第23题)原地起跳时,先屈腿下蹲,然后突然蹬地.从开始蹬地到离地是加速过程(视为匀加速),加速过程中重心上升的距离称为“加速距离”.离地后重心继续上升,在此过程中重心上升的最大距离称为“竖直高度”.现有下列数据:人原地上跳的“加速距离”d1=0 Title: (2005 Science Comprehensive Ability Test Question 23) When you take off the ground, bend your legs and knees first, then suddenly slamming the ground. From the beginning to the ground, it is an acceleration process (assuming uniform acceleration), and the center of gravity during acceleration is The rising distance is called “acceleration distance”. After the ground is lifted, the center of gravity continues to rise. In this process, the maximum distance that the center of gravity rises is called “vertical altitude.” The following data are available: “acceleration distance” d1= where people jump in place. 0