再论从物理角度分析跳远成绩

REDISCUSSION ABOUT ANALYZING THE LONG-JUMP PERFORMANCE FROM THE PHYSICAL ANGLE

建立2个坐标系,从力学原理分析起跳时的角度、初速度与跳远成绩的关系.同时与郑亚晨的文章的理论分析进行商榷.

By establishing two coordinates, the relation of the take_off angle, initial speed and long_jump achievement is analyzed from the angle of mechanical principle. At the meantime, the authors deliberating with the academic analysis in Zheng Ya_chen.