如图所示小球自由下落落在一竖直放置的弹簧上小球在a点与弹簧接触到b点时将弹簧压缩到最短在球从a点到b点的过程中不计空气阻力作用则 Template




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tomski如图所示小球自由下落落在一竖直放置的弹簧上小球在a点与弹簧接触到b点时将弹簧压缩到最短在球从a点到b点的过程中不计空气阻力作用则 coloring