一物块在光�的水平面上受一恒力f的作用而运动在其正前方固定一个足够长的轻质弹簧如图所示.当物块与弹簧接触后 A.物块立即做减速运动b Template




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tomski一物块在光�的水平面上受一恒力f的作用而运动在其正前方固定一个足够长的轻质弹簧如图所示.当物块与弹簧接触后 a.物块立即做减速运动b coloring