It is very rough. But please note that "coefficient of friction" isn't specified for a single substance. Rather, it is specified for the COMBINATION of two different surfaces. It must also be specified if some lubricant is used. For example sandpaper on sandpaper, sandpaper on glass, glass on glass (dry), glass on glass (wet), etc.
Sandpaper and asphalt both have relatively high coefficients of friction.
Some examples of relatively high friction surfaces are: sand paper, grass, and asphalt. In general, the rougher the surface, the more friction it has.
the sandpaper has more friction
Carpet has more friction. In my science class we did an experiment and proved this true.
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Sandpaper and asphalt both have relatively high coefficients of friction.
Example of high friction is a really rough surface like sandpaper.
Sandpaper is designed to be a high-friction material. High friction on a slide means less downward force, which means less acceleration and less velocity.
Some examples of relatively high friction surfaces are: sand paper, grass, and asphalt. In general, the rougher the surface, the more friction it has.
the sandpaper has more friction
All materials have a property called the coeffecient of kinetic friction. When this property is high, a higher friction force resists the motion of objects across the surface. Sandpaper has a higher coefficient of kinetic friction as compared to something like ice. This is because ice is smooth whereas the surface of sandpaper is very rough which increases the friction it causes.
Different materials have different coefficients of friction because the materials have different microscopic bumps and valleys which cause the friction to begin with. Coefficients of friction are constant for each material.
Static and kinetic coefficients
Carpet Fridge door Skateboard Sandpaper Nail filler Rubber
Uhmmm, well... this may be disappointing, but the answer is not at all. Friction is not some weird thing that never occurred to Newton. We actually have coefficients of friction that you can put into equations that will quantify how fast your cat will slide down an inclined plane versus you in your sandpaper jeans.
Carpet has more friction. In my science class we did an experiment and proved this true.
Ice has little friction. Sandpaper has lots of friction.