1水平位置的传送带上以速度v=2米/s向右运行,现将一小物体轻轻的放在传送带A端(左边定点)物体与传送带之间的动摩擦因数是0.2,若A端与B端的距离是4米,球物体由A端到B的时间和物体到B时的
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![1水平位置的传送带上以速度v=2米/s向右运行,现将一小物体轻轻的放在传送带A端(左边定点)物体与传送带之间的动摩擦因数是0.2,若A端与B端的距离是4米,球物体由A端到B的时间和物体到B时的](/uploads/image/z/13820029-61-9.jpg?t=1%E6%B0%B4%E5%B9%B3%E4%BD%8D%E7%BD%AE%E7%9A%84%E4%BC%A0%E9%80%81%E5%B8%A6%E4%B8%8A%E4%BB%A5%E9%80%9F%E5%BA%A6v%3D2%E7%B1%B3%2Fs%E5%90%91%E5%8F%B3%E8%BF%90%E8%A1%8C%2C%E7%8E%B0%E5%B0%86%E4%B8%80%E5%B0%8F%E7%89%A9%E4%BD%93%E8%BD%BB%E8%BD%BB%E7%9A%84%E6%94%BE%E5%9C%A8%E4%BC%A0%E9%80%81%E5%B8%A6A%E7%AB%AF%EF%BC%88%E5%B7%A6%E8%BE%B9%E5%AE%9A%E7%82%B9%EF%BC%89%E7%89%A9%E4%BD%93%E4%B8%8E%E4%BC%A0%E9%80%81%E5%B8%A6%E4%B9%8B%E9%97%B4%E7%9A%84%E5%8A%A8%E6%91%A9%E6%93%A6%E5%9B%A0%E6%95%B0%E6%98%AF0.2%2C%E8%8B%A5A%E7%AB%AF%E4%B8%8EB%E7%AB%AF%E7%9A%84%E8%B7%9D%E7%A6%BB%E6%98%AF4%E7%B1%B3%2C%E7%90%83%E7%89%A9%E4%BD%93%E7%94%B1A%E7%AB%AF%E5%88%B0B%E7%9A%84%E6%97%B6%E9%97%B4%E5%92%8C%E7%89%A9%E4%BD%93%E5%88%B0B%E6%97%B6%E7%9A%84)
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