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Q: what are we going to do to reduce friction?
A: Friction is the force resisting the relative motion of solid surfaces, fluid layers, and/or material elements sliding against each other. [ There are several types of friction: Dry friction resists relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into static friction between non-moving surfaces, and kinetic friction between moving surfaces. Fluid friction
describes the friction between layers within a viscous fluid that are moving relative to each other.[1][2] Lubricated friction is a case of fluid friction where a fluid separates two solid surfaces.[3][4][5] Skin friction is a component of drag, the force resisting the motion of a solid body through a fluid. Internal friction is the force resisting motion between the elements making up a solid material while it undergoes deformation. ]
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what is force?
Weegy: In physics, a force is any influence that causes a free body to undergo a change in speed, a change in direction, or a change in shape. (More)
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