从高空下落的物体速度越来越大.所受空气阻力也会随速度的增大而增大因此物体下落一段距离后将以某一速度作匀速运动通常把这个速度称为收尾速度 Template




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tomski从高空下落的物体速度越来越大.所受空气阻力也会随速度的增大而增大因此物体下落一段距离后将以某一速度作匀速运动通常把这个速度称为收尾速度 coloring