如图所示一物块由静止开始从粗糙斜面上的一点加速下�到另一点在此过程中重力做功为wg物体重力势能变化为 Ep物体末动能为ek物体克服 Template




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tomski如图所示一物块由静止开始从粗糙斜面上的一点加速下�到另一点在此过程中重力做功为wg物体重力势能变化为 ep物体末动能为ek物体克服 coloring