The rough surface is better than the smooth surface for the frictional force to act.
rough sex is good, but smooth sex is better so it cannot hurt anybody!
smooth surface
Depends what she's in the mood for. None is better than the other.
Rough with the Smooth was created in 1995.
The difference between rough and smooth is the texture. Rough things have a bumpy, abrasive texture. Smooth things have are not rough.
We went swimming in the sea. The sea was calm/smooth/choppy/rough when we crossed the Channel.
Its a bit of both but I think it's hard
glaciers can be smooth and rough depends on how their formed
steam with rough bark
The difference between rough and smooth is the texture. Rough things have a bumpy, abrasive texture. Smooth things have are not rough.
rough