1. 如图所示弹簧下面挂一质量为m的物体物体在竖直方�上下运动当物体到最高点时弹簧正好为原长.则物体在运动过程中 A.物体在最低点时的 Template




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tomski1. 如图所示弹簧下面挂一质量为m的物体物体在竖直方�上下运动当物体到最高点时弹簧正好为原长.则物体在运动过程中 a.物体在最低点时的 coloring