找两个瓶子【内盛水】.一个小铁球.一个与小铁球体积相等的塑料球.两根细绳.将它们系好.小铁球在水中下沉,瓶正放.泡沫塑料球在水中上浮.瓶倒放.当瓶突然向前运动时,观察比较小球的运动
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![找两个瓶子【内盛水】.一个小铁球.一个与小铁球体积相等的塑料球.两根细绳.将它们系好.小铁球在水中下沉,瓶正放.泡沫塑料球在水中上浮.瓶倒放.当瓶突然向前运动时,观察比较小球的运动](/uploads/image/z/8269983-63-3.jpg?t=%E6%89%BE%E4%B8%A4%E4%B8%AA%E7%93%B6%E5%AD%90%E3%80%90%E5%86%85%E7%9B%9B%E6%B0%B4%E3%80%91.%E4%B8%80%E4%B8%AA%E5%B0%8F%E9%93%81%E7%90%83.%E4%B8%80%E4%B8%AA%E4%B8%8E%E5%B0%8F%E9%93%81%E7%90%83%E4%BD%93%E7%A7%AF%E7%9B%B8%E7%AD%89%E7%9A%84%E5%A1%91%E6%96%99%E7%90%83.%E4%B8%A4%E6%A0%B9%E7%BB%86%E7%BB%B3.%E5%B0%86%E5%AE%83%E4%BB%AC%E7%B3%BB%E5%A5%BD.%E5%B0%8F%E9%93%81%E7%90%83%E5%9C%A8%E6%B0%B4%E4%B8%AD%E4%B8%8B%E6%B2%89%2C%E7%93%B6%E6%AD%A3%E6%94%BE.%E6%B3%A1%E6%B2%AB%E5%A1%91%E6%96%99%E7%90%83%E5%9C%A8%E6%B0%B4%E4%B8%AD%E4%B8%8A%E6%B5%AE.%E7%93%B6%E5%80%92%E6%94%BE.%E5%BD%93%E7%93%B6%E7%AA%81%E7%84%B6%E5%90%91%E5%89%8D%E8%BF%90%E5%8A%A8%E6%97%B6%2C%E8%A7%82%E5%AF%9F%E6%AF%94%E8%BE%83%E5%B0%8F%E7%90%83%E7%9A%84%E8%BF%90%E5%8A%A8)
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