在高一物理第三章第九节“竖直上抛运动”中,教材通过分析和举例,在得到了竖直上抛运动的一些规律后总结说:“实际上,在竖直上抛运动中,物体的上升过程和下落过程是有内在关系的。不但上升时间等于下落时间,而且在上升过程中通过某一位置的速度和 In the third chapter of the physics chapter ninth section ”vertical throwing exercise“, the textbook through analysis and examples, in the vertical after the law of throwing some movement and concluded: ”In fact, in the vertical In the throwing movement, the rising process and the falling process of the object are intrinsically related, and not only the rising time is equal to the falling time, but also the velocity and the velocity passing through a certain position in the rising process.