由于流动接触可使起动磨擦阻力及动磨擦阻力为极小，因此可以节省能源，容易得到较高运动速度。
Can start the flow of contacts and dynamic friction resistance is to minimize the friction resistance, it can save energy, easy to get a higher velocity.
飓风离开海洋，刮向内陆时，风与崎岖不平的地面发生磨擦，终至使风暴速度减缓下来。
When a hurricane moves off the ocean and travels inland, friction between the rough land surface and the winds finally slows the storm down.
因为这使用2.5秒反应时间和用刹车使0.29的磨擦放慢速度，在这范围外边的最初距离应该经常导致在冲突之前停止。
Since this USES a 2.5 second reaction time and braking friction of 0.29, initial distances outside this range should almost always result in stopping before collision.
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