48. （8分）物体从空中下落有快有慢，有人说：下落物体的快慢与物体重量有关，重量大的物体下落要快，重量

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不是 是由于都有摩擦力 体积大的摩擦力大些 但是物体的重力加速度都是一样的 所以说你说的那个不正确

与重量无关，只是受到空气的阻力不同

物体下落的快慢与物体重量没有关系，与重力加速度有关

扩展阅读：7.5 54毫米步枪弹 ... 8一 一8 计算过程 ... 胚胎评分6 7 8分别代表 ... 空中物体坠落 ... 48mm的物体有多大 ... 83 65中间填啥 ... 卵泡0.7 0.6厘米会长大吗 ... 7x 3二8.19怎么检验 ... 六个起来 民航 ...