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Khan Academy
Khan Academy: Force of Friction Keeping Velocity Constant
Calculate the coefficient of kinetic friction for a block that is on an incline plane with this video lecture. Video includes a step-by-step process for solving these types of problems. [9:09]
Sophia Learning
Sophia: Common Coefficients of Kinetic Friction: Lesson 1
This lesson provides the learner with the coefficients of kinetic friction for some common surfaces. It is 1 of 2 in the series titled "Common Coefficients of Kinetic Friction."