Why moistening your fingers helps increase their traction with respect to opening thin plastic bags or flipping through paper, but moisture on a road decreases the traction of your car tires?
In: 5
Water is sticky to a lot of things. It’s slick against itself if there is enough of it.
When you lose traction on a wet road, it’s because there is enough water sticking to both the road and your tire, that it creates a film on both, so that the tire and road have enough water between the two of them to cause the water to slip against itself.
Think of it like sand. Sand on a surface can act as either a lubricant or as grip, depending on the amount of sand and the surface itself. A lot of sand and you basically swimming it it.
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