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掌握网球落地反弹的规律并利用反弹规律合理采用击球方法 ,是网球运动员打好球的关键。采用摄像和多媒体技术以及力学分析 ,结果显示 :网球击球的入射角一般在 12°～ 30°之间 ,中等速度飞行的上旋球和平击球落地反弹后反弹角小于入射角 ,下旋球的反弹角大于入射角。网球的落地反弹形式有二种 ,一种是一般的反弹 ,球与地面没有滑动。另一种是球与地面有滑动的滑动反弹。滑动反弹的球 ,角度小、速度快更具攻击性。场地与球的摩擦系数越小 ,入射角越小 ,入射速度越快 ,越容易产生滑动反弹
Grasp the law of the rebound of the tennis floor and use the law of rebounding the reasonable use of hitting method is the key to tennis player playing good. The results show that the incidence angle of tennis hitting ball is generally between 12 ° ~ 30 °, and the bouncing angle of the upper spin ball and the lower ball striking a medium speed flying is less than the angle of incidence and the spin ball The bounce angle is greater than the angle of incidence. There are two types of tennis rebound in the ground, one is the general rebound, the ball did not slide with the ground. The other is the sliding slide between the ball and the ground bounce. Slide bouncing ball, small angle, faster and more aggressive. The smaller the friction coefficient of the field and the ball, the smaller the incident angle, the faster the incident speed, the more prone to sliding bounce