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空气反冲力实验

适用年级 1-6年级

key word:Digital inquiry experiment system

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原理 

风扇转动时,给空气一个向后的力,这样小车就得到一个反作用力,所以小车就会向相反的方向前进。装上挡板,车子产生不了反冲力就不会行驶。

目的 

了解空气的反冲力和方向。

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