如图所示球从斜面上由静止滚下打到一个小木块上能将木块撞出一段距离.放在同一水平面上相同位置的木块被撞得越远表示钢球的动能越大.现用 Template




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tomski如图所示球从斜面上由静止滚下打到一个小木块上能将木块撞出一段距离.放在同一水平面上相同位置的木块被撞得越远表示钢球的动能越大.现用 coloring