The role of friction in soccer is the same as the role of friction in any other sport with a ball. Friction between the ball and grass or artificial turf slows the ball, sometimes considerably. Both offensive and defensive players can use that to their advantage...an offensive player may kick the ball down the field knowing the grass will stop it before it gets to the end line and goes out of bounds, while a defensive player may attempt to the shield the offensive player from getting to the ball so that it *does* go out.
There are two important factors when it comes to the field and friction, 1) whether it's grass or artificial turf (which directly translates to "how long is the grass"), and 2) if it's wet or dry.
1) grass v artificial turf: most times turf is much shorter than grass, so the ball "runs" (doesn't stop rolling) when playing on turf. Players need to take care to not kick the ball too hard or it may go out of bounds before he (or the receiver) can get to it. Also, the longer the grass, the slower the ball will roll and the quicker it will stop. As stated above, an astute player will test the speed of the pitch in pre-game warmups and figure out how hard he can kick it and use that to his advantage during the game.
2) wet v dry: there's a dichotomy here.... a ball will generally roll further on dry grass than it will on wet grass of the same length, *BUT* an airborne ball will "skip" on wet grass.
Get this...if the ground is dry and a ball is kicked so it's rolling it will go X distance (rolling). If the same ground becomes wet and the ball is kicked with the same power it will go *less* than X distance (rolling).
The dichotomy is in that same scenario, the reverse may be true if the ball leaves the ground. If the ball leaves the ground it will mostly likely "skip" on wet grass/turf and go further than if the ground was dry.
Ice skating is because you dont go fast and there is rarely any friction
ice skating
Ice skating uses friction to make you move smoothly across the ice rink.Friction is in just about all movements.
In engines - during ice skating.
Ice skating does not require any friction because the skater needs to glide on the ice and if there was any friction on ice the skater would have trouble to skate smoothly on the ice. That is why ice skating does not require any friction at all from my perspective.
for slowing down, stopping etc
Let us go for an answer that you may not have thought of shall we? If you were skating on ice and you built up speed then stopped skating, eventually you would stop. Why? because ice has friction though very little. This friction works on the friction on the blades of your skates bringing you to a stop.
Ice skates experience kinetic friction when in contact with the ice. This type of friction occurs when two surfaces are sliding against each other. Kinetic friction helps provide the necessary grip for ice skating.
Yes, a Zamboni reduces friction on the ice by resurfacing it. The machine applies a thin layer of water to create a smooth surface, which helps reduce friction and improve the ice quality for ice skating or hockey.
Friction is basically everywhere, but if there is a object in front of that it will automatically slow you down. Ex.when you are on an ice skating rink nothing can stop you because there is no friction at all. But when you are on a football field the object (grass) is in front of the friction it would slow you down more than it would when you are on an ice skating rink.
Because friction is a force acting against the forward motion of the puck, friction is going to play a role in slowing down the puck as it glides across the ice. The friction is not going to be great enough to stop it instantly, but if not touched by another stick for some time it will come to a stop.
Ice skating