Multiple Choice
In the context of kinetic friction, what effect does friction have on an object sliding across a surface?
7. Friction, Inclines, Systems
Kinetic Friction
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In the context of kinetic friction between two sliding solid surfaces, which change will most directly reduce the kinetic frictional force?
A
Increase the contact area while keeping the normal force the same
B
Increase the normal force pressing the surfaces together
C
Replace the surfaces with rougher materials (higher coefficient of kinetic friction)
D
Apply a lubricant between the surfaces
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