问一个有关动能势能的物理问题体积相同的实心铜球和木球,放在同一水平桌面上,铜球静止,木球以速度v作匀速直线运动,下列说法正确的是(A)木球和铜球的重力势能相同(B)木球的动能一定比
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![问一个有关动能势能的物理问题体积相同的实心铜球和木球,放在同一水平桌面上,铜球静止,木球以速度v作匀速直线运动,下列说法正确的是(A)木球和铜球的重力势能相同(B)木球的动能一定比](/uploads/image/z/6807735-63-5.jpg?t=%E9%97%AE%E4%B8%80%E4%B8%AA%E6%9C%89%E5%85%B3%E5%8A%A8%E8%83%BD%E5%8A%BF%E8%83%BD%E7%9A%84%E7%89%A9%E7%90%86%E9%97%AE%E9%A2%98%E4%BD%93%E7%A7%AF%E7%9B%B8%E5%90%8C%E7%9A%84%E5%AE%9E%E5%BF%83%E9%93%9C%E7%90%83%E5%92%8C%E6%9C%A8%E7%90%83%2C%E6%94%BE%E5%9C%A8%E5%90%8C%E4%B8%80%E6%B0%B4%E5%B9%B3%E6%A1%8C%E9%9D%A2%E4%B8%8A%2C%E9%93%9C%E7%90%83%E9%9D%99%E6%AD%A2%2C%E6%9C%A8%E7%90%83%E4%BB%A5%E9%80%9F%E5%BA%A6v%E4%BD%9C%E5%8C%80%E9%80%9F%E7%9B%B4%E7%BA%BF%E8%BF%90%E5%8A%A8%2C%E4%B8%8B%E5%88%97%E8%AF%B4%E6%B3%95%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF%28A%29%E6%9C%A8%E7%90%83%E5%92%8C%E9%93%9C%E7%90%83%E7%9A%84%E9%87%8D%E5%8A%9B%E5%8A%BF%E8%83%BD%E7%9B%B8%E5%90%8C%28B%29%E6%9C%A8%E7%90%83%E7%9A%84%E5%8A%A8%E8%83%BD%E4%B8%80%E5%AE%9A%E6%AF%94)
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