How do skis help you to go fast downhill?

Answer 1

Yes, skis WILL help you get downhill faster if there is snow. You need to know how steep the hill is to know how fast you will go. If you add some ski wax to the bottom of your skis, you will go extra fast.

Answer 2

Skis are smooth at the bottom, and snow will be soft ( or hard ). That will create less friction between your skis and the snow. If you don't know what friction is, it's the force when something is moving on a surface. Skiing downhill will show you a perfect example of it.