伽利略在研究自由落体运动时,提出了一个问题:自由落体的速度,既随下落时间的增大而增大,也随下落位移的增大而增大.那么自由落体的速度,到底可能是随时间的增大均匀的呢,还是随位移的增大是均匀的?因此,历史上有些科学家曾把在相等位移内速度变化相等的单向直线运动称为“匀变速直线运动”(现称“另 When Galileo studied free-fall movement, he raised a question: The speed of free fall increases with falling time and also with falling displacement, so the rate of free fall may be as high as Therefore, some scientists in history have referred to the unidirectional linear motion with equal speed changes in equal displacements as ”uniform linear motion“ (now Called ”another