this is a physics question that im confused on and nobody in the physics subject will help me so im just trying you guys... but .
What is friction?

the wearing down of surfaces

resistance to motion of two surfaces in contact

mutual irritation

the generation of heat by rubbing hands together

Question

this is a physics question that im confused on and nobody in the physics subject will help me so im just trying you guys... but . 
What is friction?

       the wearing down of surfaces

       resistance to motion of two surfaces in contact

       mutual irritation

       the generation of heat by rubbing hands together

abb0t · Answer

resistance that one surface or object encounters when moving over another

anonymous · Answer

b? but thats two surfaces. and thats why im confused

saifoo.khan · Answer

@megen505 : Please don't post physics problems in Mathematics section.
I understand that no one was helping you there but eventually you'll be rescued. :)

And regarding your question, i also think it's B.