同学们一定听说过“龟兔赛跑”的故事:乌龟和兔子同时从起点出发,兔子冲在前面,但骄傲的兔子中途在树下睡起了大觉,等它醒来的时候乌龟已经爬到了终点.在兔子睡觉前,兔子和乌龟谁跑得快?比赛结束时,兔子和乌龟谁跑得快?比较物体运动快慢的方法比较物体运动的快慢通常有两种方法:(1)在物体的运动时间相同的情况下,通过路程长的物体运动得快.(2)在物体的运动路程相同的情况下,运动时间 The classmates must have heard of the story of a tortoise and a tortoise: the tortoise and the rabbit start at the same time starting with the rabbit rushing in front, but the proud rabbit sleeps awake halfway through the tree, waiting for it to wake up Has climbed to the finish. Who did the rabbit and the turtle run faster before the rabbit went to bed? How did the rabbit and the turtle run faster at the end of the race? How do you compare the speed of an object? There are usually two ways to compare the speed of an object’s movement: In the case of the same object movement time, through the long object movement faster (2) In the case of the same object movement, exercise time