例1竖直上抛一物体,物体分别在tl秒末和t:秒末通过空中某一点,求该点离地面的高度和物体抛出时的速度. 解法1设该点离地面的高度是h,物体抛出时的速度是v0,当物体第一次经过该点时有上的同一个靶标.已知炮弹的初速度是v0,求此山的海拔高度及靶标的水平距离(不计空气阻力). 分析 Example 1 throws an object vertically, and the object passes through a certain point in the air at the end of tl seconds and at the end of t: second, and finds the height of the point from the ground and the speed at which the object is thrown. Solution 1 Set the height of the point from the ground to be h. The speed at which the object is ejected is v0. When the object passes the point for the first time, it has the same target. The known initial velocity of the projectile is v0. Find the altitude of this mountain and the horizontal distance of the target (excluding the air Resistance). Analysis