测量小车在斜面上运动的平均速度的原理是v=stv=st，小枫同学认为物理课堂上测量小车在斜面上运动的平均速 物理学中的C是什么意思
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\u7269\u7406\u5b66(Physics):\u7269\u7406\u73b0\u8c61\u3001\u7269\u8d28\u7ed3\u6784\u3001\u7269\u8d28\u76f8\u4e92\u4f5c\u7528\u3001\u7269\u8d28\u8fd0\u52a8\u89c4\u5f8b
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\u7a7a\u95f4\u5c3a\u5ea6:
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\u5fae\u89c2\u7c92\u5b50Microscopic
\u4ecb\u89c2\u7269\u8d28mesoscopic
\u5b8f\u89c2\u7269\u8d28macroscopic
\u5b87\u89c2\u7269\u8d28cosmological \u7c7b\u661f\u4f53 10^26m
\u65f6\u95f4\u5c3a\u5ea6:
\u57fa\u672c\u7c92\u5b50\u5bff\u547d 10s
\u5b87\u5b99\u5bff\u547d 10s
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\u6309\u901f\u7387\u5927\u5c0f\u5212\u5206: \u76f8\u5bf9\u8bba\u7269\u7406\u5b66\u3001\u975e\u76f8\u5bf9\u8bba\u7269\u7406\u5b66
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\u6309\u8fd0\u52a8\u901f\u5ea6\u5212\u5206: \u4f4e\u901f\uff0c\u4e2d\u901f\uff0c\u9ad8\u901f
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\u6269\u5c55\u8d44\u6599
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1\u3001\u51dd\u805a\u6001\u7269\u7406--\u7814\u7a76\u7269\u8d28\u5b8f\u89c2\u6027\u8d28\uff0c\u8fd9\u4e9b\u7269\u76f8\u5185\u5305\u542b\u6781\u5927\u6570\u76ee\u7684\u7ec4\u5143\uff0c\u4e14\u7ec4\u5458\u95f4\u76f8\u4e92\u4f5c\u7528\u6781\u5f3a\u3002\u6700\u719f\u6089\u7684\u51dd\u805a\u6001\u76f8\u662f\u56fa\u4f53\u548c\u6db2\u4f53\uff0c\u5b83\u4eec\u7531\u539f\u5b50\u95f4\u7684\u952e\u548c\u7535\u78c1\u529b\u6240\u5f62\u6210\u3002\u66f4\u591a\u7684\u51dd\u805a\u6001\u76f8\u5305\u62ec\u8d85\u6d41\u548c\u6ce2\u8272-\u7231\u56e0\u65af\u5766\u51dd\u805a\u6001(\u5728\u5341\u5206\u4f4e\u6e29\u65f6\uff0c\u67d0\u4e9b\u539f\u5b50\u7cfb\u7edf\u5185\u53d1\u73b0);\u67d0\u4e9b\u6750\u6599\u4e2d\u5bfc\u7535\u7535\u5b50\u5448\u73b0\u7684\u8d85\u5bfc\u76f8;\u539f\u5b50\u70b9\u9635\u4e2d\u51fa\u73b0\u7684\u94c1\u78c1\u548c\u53cd\u94c1\u78c1\u76f8\u3002\u51dd\u805a\u6001\u7269\u7406\u4e00\u76f4\u662f\u6700\u5927\u7684\u7684\u7814\u7a76\u9886\u57df\u3002\u5386\u53f2\u4e0a\uff0c\u5b83\u7531\u56fa\u4f53\u7269\u7406\u751f\u957f\u51fa\u6765\u30021967\u5e74\u7531\u83f2\u7acb\u666e\u00b7\u5b89\u5fb7\u68ee\u6700\u65e9\u63d0\u51fa\uff0c\u91c7\u7528\u6b64\u540d\u3002
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C\u662f\u7269\u7406\u91cf\u6bd4\u70ed\u5bb9\u3002
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| s |
| t |
小车运动的时间不容易测准，可能是由于斜面的坡度太陡，小车速度过快而造成；
以木块的左端为准，s=5cm+45cm=50cm
t=14：35：05-14：35：00=5s
则v=
| s |
| t |
| 50cm |
| 5s |
故答案为：v=
| s |
| t |
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