Скачать или смотреть Intro to Friction | Physics - Forces & Newton's Laws

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In this video we'll get an introduction to friction. What is a friction force and how does it affect an object's motion? How do we know the direction of a friction force? What actually causes friction at the microscopic level? What is the coefficient of friction? What are static friction and kinetic friction?

0:00 Intro
0:13 What is friction and how does it affect motion?
1:22 Friction forces
2:20 Direction of friction forces
3:29 Friction at the microscopic level
4:33 Roughness and coefficient of friction
6:10 Types of friction: static and kinetic

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