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Since the magnitude of the applied force is greater than the magnitude of the force of kinetic friction opposing it, the block is accelerating to the left. Friction is the force resisting the relative motion of solid surfaces, fluid layers, and/or material elements sliding against each other. — “Friction - Wikipedia, the free encyclopedia”, en.wikipedia.org
sometimes other frictions like credit market imperfections or labor market frictions, as a response to criticisms of the George Akerlof -- include for work on microfoundations involving informational frictions. — “Template talk:Keynesians - Wikipedia, the free encyclopedia”, en.wikipedia.org
Among other applications, it has been used as a framework for studying frictional unemployment. the best available descriptions of the frictions in the labor market, but some economists. — “Matching theory (macroeconomics) - Wikipedia, the free”, en.wikipedia.org
Phillotson took it off, so that they could see each other better, and the rays fell on the nervous little face and vivacious dark eyes and hair of Sue, on the earnest features of her cousin, and on the schoolmaster's own maturer face and figure, showing him to be a spare and thoughtful personage of five-and-forty, with a thin-lipped, somewhat refined mouth, a slightly stooping habit, and a black frock coat, which from continued frictions shone a little at the shoulder-blades, the middle of the back, and the elbows. — “Jude the Obscure” by Thomas Hardy