Sophia Learning
Sophia: Calculating Kinetic Friction: Lesson 2
This lesson demonstrates how to make calculations using kinetic friction. It is 2 of 2 in the series titled "Calculating Kinetic Friction."
Sophia Learning
Sophia: Kinetic Friction & Normal Forces: Lesson 1
This lesson explains why kinetic friction depends on normal forces. It is 1 of 2 in the series titled "Kinetic Friction & Normal Forces."
Sophia Learning
Sophia: Kinetic Friction & Surface Area: Lesson 1
This lesson explains why kinetic friction does not depend on the contact surface area between an object and the surface that object is sliding across. It is 1 of 2 in the series titled "Kinetic Friction & Surface Area."
Science Struck
Science Struck: Static Friction vs. Kinetic Friction: The Differences
Teaches what friction force is, the difference between static and kinetic friction, and how friction force is calculated.
Science4Fun
Science4 Fun: What Is Friction
What is friction? Illustrated discussion of friction including the three types, its importance, and why it is avoided.