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为什么乒乓球扔下地会弹起来
更新时间: 2020-09-19 00:00:00  

乒乓球之所以能弹起来是因为乒乓球与其他球类一样具有弹性,当乒乓球被扔到地上时,该地面会给乒乓球一个反作用力,由于乒乓球的质量密度较小,且不是实心的,所以就会被轻松弹起。

关键词: 为什么 乒乓球 扔下 起来

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