话说这道题目是讲小球落下的,求小球平均每秒落下几米?
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![话说这道题目是讲小球落下的,求小球平均每秒落下几米?](/uploads/image/z/399182-14-2.jpg?t=%E8%AF%9D%E8%AF%B4%E8%BF%99%E9%81%93%E9%A2%98%E7%9B%AE%E6%98%AF%E8%AE%B2%E5%B0%8F%E7%90%83%E8%90%BD%E4%B8%8B%E7%9A%84%2C%E6%B1%82%E5%B0%8F%E7%90%83%E5%B9%B3%E5%9D%87%E6%AF%8F%E7%A7%92%E8%90%BD%E4%B8%8B%E5%87%A0%E7%B1%B3%3F)
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