跳远“空中转动”这个名词,粗看起来好象比较陌生,但在我们经常的跳远教学与训练中,无时无刻不和它接触,并不断地在克服它,以提高跳远的成绩,这里我就跳远的“空中转动”问题进行剖析和探讨。一、在跳远中什么是“空中转动”。所谓跳远中的“空中转动”,就是当人体起跳蹬离地面后,身体的重心按一定的抛物线轨迹飞进。根据动量守恒定律,在一个力学系统内,内力可以改变系统内各物体间的动量,可将某一部分的动量转递给另一部分,但不能改变整个系统的总动 The term “air spinning” in the long jump may seem strange to the outside, but in our regular long jump teaching and training, it is always in contact with it and continuously overcomes it in order to improve its long jump performance. The “air rotation” problem analysis and discussion. First, what is “aerial rotation” in long jump? The so-called long jump in the “air rotation”, that is, when the body jump off the ground after the jump, the body’s center of gravity by a certain parabolic trajectory into. According to the law of conservation of momentum, in a mechanics system, internal forces can change the momentum between objects in the system, which can transfer the momentum of one part to another, but can not change the total motion of the whole system