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science help
ok this is a homework problem that i really need help on cause i missed 3 days of school....Applying pressure lowers the melting point of ice. Why might an icy road at -1°C be more dangerous than an icy road at -10°C?
Thanks in advance <333
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Well, based on the information you provided...
If you're driving on the ice, you're applying pressure, right? This will decrease the melting point of the ice. This means that the top layer of the ice will melt, so that you have a layer of water between your tires and the ice. I don't know if you've taken enough physics to have learned this, but the kinetic coefficient of friction (the constant that you multiply the force by to incorporate the effects of friction based on the material you're looking at) will be lower between water and ice than it will be between rubber (the tires) and ice.
So, at -1`C, it's more likely that the top layer of ice will melt to give you a layer of water than it is at -10`C, and therefore it would be more dangerous.
Make sense? If you have any other questions like this, I can definitely help... I just finished my fourth physics course :)
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