# B the force of static friction always has a direction

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b.The force ofstatic frictionalways has adirectionthat is…A.opposite to the direction of the object’s velocityB.opposite to the sum of all other external forces (components parallel to surface) on the object
c.LetFN= magnitude of normal force from the surface of contact.The force ofstatic frictionhas amagnitudethat is…FN
03.Kinetic Friction:a.The force ofkinetic frictionalways has adirectionthat is…
b.The force ofkinetic frictionalways has adirectionthat is…
c.LetFN= magnitude of normal force from the surface of contact.The force ofkinetic frictionhas amagnitudethat is…A.always½µk·FNB.alwaysµk·C.any strength from zero toµk·FNas needed to oppose the sum of other external forces (parallel to the surface)FN

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Term
Spring
Professor
StephenDye
Tags