
thumb|360px|The blue plate has more friction on the sloped surface than the green one, so slides down slower.
Friction is a force that resists movement between two surfaces in contact with each other, causing objects to slow down or stop sliding. It matters because it affects how quickly things move—for example, a surface with more friction will cause an object to slide down more slowly than a surface with less friction.
AI-generated from the Wikipedia summary — may contain errors.
thumb|360px|The blue plate has more friction on the sloped surface than the green one, so slides down slower.
300x150px|thumb|Simulated blocks with fractal rough surfaces, exhibiting static frictional interactions
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).