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在体育运动中出手点与落地点不在同一水平面上的项目较多。即已知出手高度H,出手速度大小V_0,出手角度α,,求投掷物体的飞行远度。这个问题在体育系《运动生物力学》的教学中还是比较重要的。采取什么样的推导方法学生易于接受,这是大家所关心的问题。传统的做法是把出手点高于落地点的物体的运动分为A点的斜上抛运动和一个B点的斜下拋运动处理,远度则是S=S_1+S_2。如图(一)这样划分,B点分解在竖直方向的运动是竖直下抛运动。在B点,物
In the sports shot and landing site is not the same level of the project more. Known that the shot height H, shot size V_0, shot angle α ,, seeking to throw objects flying distance. This problem is still more important in the teaching of sports biomechanics. What kind of derivation method is adopted by students is easy to accept, which is a matter of concern to all. The traditional method is to point out the movement of objects above the landing point is divided into A point oblique throwing movement and a B point oblique throwing throwing movement processing, the distance is S = S_1 + S_2. As shown in Figure (a) of this division, B points decomposition in the vertical direction of the movement is vertical throwing movement. At point B, things