车子刹车主要取决于轮胎与地面之间的摩擦力,摩擦力的大小取决于摩擦系数,假设摩擦系数为μ,则刹车距离S=V*V/2gμ(g=9.8m/s2),由此可见,刹车距离与速度的平方成正比,与摩擦系数成反比。当摩擦系数一定时,刹车距离取决于车速,如果车速增加1倍,刹车距离将增大至4倍。
根据他们的计算,这将使以每小时100公里行驶的汽车的刹车距离增加5。7米。
That, they calculate, would add 5.7 metres to the braking distance of a car travelling at 100kph.
科学家说,接受到司机的脑电波信号能缩短刹车距离以避免撞车。
Tapping into drivers' brain signals can cut braking distances and avoid car crashes, according to scientists.
据交警介绍,空挡滑行会导致车子刹车距离延长,容易追尾。
According to the traffic police introduction, neutral will lead to the car braking distance taxi, easy to extend the collision.
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