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1.匀速直线运动的速度作匀速直线运动的物体的速度大小和方向都不变。例1一列磁悬浮列车在平直的轨道上匀速行驶,在1min内通过的路程为1.8km.那么,它在后0.6km的路程上的速度是m/s.解析:本题的关键就是对作匀速直线运动的物体的速度大小不变的理解和应用.作匀速直线运动的物体在任何时间或任何路程上的速度都相等,或者是在任何相同的时间内物体通过的路程相等.解法一:v=s/t:1800m/60s=30m/s.由于列车在整个路程中的速度不变,故后
1. The velocity of a uniform linear motion The velocity and the direction of an object moving at a constant speed do not change. Example 1 A maglev train runs at a constant speed on a straight track. The distance traveled within 1 min is 1.8 km. Then, its speed on the trailing 0.6 km is m/s. Analysis: The key to this question is to make uniform speed. The understanding and application of the constant velocity of a linear motion object. The velocity of an object moving at a constant velocity in the line at any time or any distance is equal, or the distance traveled by the object at any given time is equal. Solution 1: v =s/t:1800m/60s=30m/s. Since the speed of the train is constant throughout the journey,