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排球运动中存在着广泛的物理学知识,本文仅针对如何提高发球命中率问题,结合高中所学物理学知识,建立了平抛这一合理的运动学模型,并分析了发球高度H和偏角θ对极限发球速度(极限最大发球速度和极限最小发球速度)的影响。发现如下规律:在H一定时,θ越大,极限最大发球速度和极限最小发球速度均增大;当θ一定时,H越小,极限最大发球速度和极限最小发球速度均增大。该结论对如何提高排球比赛中的发球命中率有一定的实际意义。
Volleyball sports exist in a wide range of physics knowledge, this article only for how to improve the service hit rate, combined with knowledge of physics in high school, established a reasonable throwing this reasonable kinematics model, and analyzed the service height H and declination The effect of θ on the extreme service speed (the maximum service speed at the limit and the minimum service speed at the limit). The following rule is found: when H is constant, the greater the θ is, the maximum maximum service speed and the minimum service speed are all increased. When θ is constant, the smaller the H is, the maximum service speed and the minimum service speed are all increased. This conclusion has certain practical significance on how to improve the hit rate of volleyball matches.