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Москвичам пообещали тепло17:31

But there are two key differences. First, we have a different coefficient, μk. This is always less than the coefficient of static friction, μs, so kinetic friction is lower. (This is why cars have antilock brakes: If you keep the wheels from locking up and skidding, you can stop in a shorter distance.) As an example, when two steel surfaces interact (like a train car wheel on a track), the coefficient of static friction would be 0.74, but the coefficient of kinetic friction would be 0.57.

。业内人士推荐新收录的资料作为进阶阅读

FirstFT: the day's biggest stories。业内人士推荐新收录的资料作为进阶阅读

I was like “Huh, that’s cool… Wait, I’ve heard of this. Screw it, why not.” and hammered out an article，详情可参考新收录的资料

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