如图所示一木块在光�水平面上受到一水平恒力f作用�右运动其右方墙壁上固定一足够长的轻弹簧当木块接触弹簧后 A.立即做减速运动b.在 Template




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tomski如图所示一木块在光�水平面上受到一水平恒力f作用�右运动其右方墙壁上固定一足够长的轻弹簧当木块接触弹簧后 a.立即做减速运动b.在 coloring