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1 平均速度与速度平均的内含1.1 平均速度 变速直线运动物体的位移跟发生该位移所用的时间之比定义为这段时间内的平均速度.即:v=s/t.它是矢量,其方向,与位移方向相同.物体在不同时间(或位移)内的平均
1 Average Speed and Speed Average of 1.1 The average speed The ratio of the displacement of a linear motion object to the time it takes for the displacement to occur is defined as the average speed over that time. That is: v = s/t. It is a vector, which The direction is the same as the direction of the displacement. The average of the objects at different times (or displacements)