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    \n
  1. \u201c\u76f8\u5f53\u4e8e\u4e00\u8f86\u8f66120km\/h\u649e\u5230\u5899\u4e0a\u201d\uff0c\u8003\u8651\u5899\u548c\u8f66\u8bb8\u591a\u7269\u7406\u7279\u6027\u7684\u5dee\u5f02\uff0c\u6bd4\u5982\u786c\u5ea6\u5dee\u5f02\uff0c\u8fd9\u53e5\u8bdd\u6539\u6210\u201c\u76f8\u5f53\u4e8e\u4e00\u8f86\u8f66120km\/h\u649e\u5230\u53e6\u4e00\u8f86\u9759\u6b62\u7684\u8f66\u4e0a\u201d<\/li>\n\n\n\n
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  5. \u4e24\u8f86\u8f66\u7684\u78b0\u649e\u53d1\u751f\u5728\u60ef\u6027\u7cfb\u4e2d\uff0c\u6839\u636e\u7269\u7406\u5b66\u76f8\u5bf9\u6027\u539f\u7406\uff0c\u9009\u62e9\u4e0d\u540c\u53c2\u8003\u7cfb\u7269\u7406\u5b66\u5b9a\u5f8b\u662f\u76f8\u540c\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u4e0d\u4f1a\u56e0\u4e3a\u9009\u7684\u53c2\u8003\u7cfb\u4e0d\u540c\uff0c\u5bfc\u81f4\u7ed3\u679c\u4e0d\u540c\u3002<\/li>\n<\/ol>\n\n\n\n

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      \n
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      {<\/mo>m<\/mi>A<\/mi><\/msub>v<\/mi>\u2212<\/mo>m<\/mi>B<\/mi><\/msub>v<\/mi><\/mrow><\/mstyle><\/mtd><\/mrow>=<\/mo>(<\/mo>m<\/mi>A<\/mi><\/msub>+<\/mo>m<\/mi>B<\/mi><\/msub>)<\/mo>v<\/mi>\u2032<\/mo><\/msup><\/mrow><\/mstyle><\/mtd><\/mtr>1<\/mn>2<\/mn><\/mfrac>m<\/mi>A<\/mi><\/msub>v<\/mi>2<\/mn><\/msup>+<\/mo>1<\/mn>2<\/mn><\/mfrac>m<\/mi>B<\/mi><\/msub>v<\/mi>2<\/mn><\/msup><\/mrow><\/mstyle><\/mtd><\/mrow>=<\/mo>1<\/mn>2<\/mn><\/mfrac>(<\/mo>m<\/mi>A<\/mi><\/msub>+<\/mo>m<\/mi>B<\/mi><\/msub>)<\/mo>v<\/mi>\u2032<\/mo>2<\/mn><\/mrow><\/msup>+<\/mo>\u0394<\/mi>E<\/mi><\/mrow><\/mstyle><\/mtd><\/mtr><\/mtable><\/mrow><\/semantics><\/math>\u200bv<\/mi>\u2032<\/mo><\/msup>=<\/mo>m<\/mi>A<\/mi><\/msub>\u2212<\/mo>m<\/mi>B<\/mi><\/msub><\/mrow>m<\/mi>A<\/mi><\/msub>+<\/mo>m<\/mi>B<\/mi><\/msub><\/mrow><\/mfrac>v<\/mi><\/mrow><\/semantics><\/math><\/p>\n\n\n\n

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        \n
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          \n
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