[题目 ]一弹性小球质量为ｍ ,从距与水平成α角的长直斜面上的某点Ｏ高ｈ处自由落下 ,设球与斜面间的碰撞无机械能损失 ,求球与斜面每两个相邻碰撞图 1点 (第一和第二、第二和第三、…… )间的距离各是多少 ?[分析与解 ]建立坐标系 ,并作出示意图 ,如图 1所示 .因为球与斜面碰 [Topic] The mass of an elastic ball is m, and it falls freely from a certain point O height h on a long straight slope that forms an angle α with the horizon. It is assumed that there is no mechanical energy loss between the ball and the slope, and the ball and the slope are every two What is the distance between 1 point (first and second, second and third, ...) of adjacent collision maps? [analysis and solution] Establish a coordinate system and make a schematic diagram, as shown in Figure 1. Because Ball and slope touch