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# Types of Friction

## Introduction to static, sliding, rolling, and fluid friction.

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Found Friction
 Static Friction Sliding Friction Rolling Friction Fluid Friction This is what keeps things in place and helps stabalize them. If you were on This is the friction that takes energy to begin the motion but reduces energy consumption to keeping in motion. Rolling friction  is the friction that keeps an object in motion such as a wheel. Fluid Friction is the friction that keeps an object in motion when compared to a fluid such as a gas or a liquid. [Figure1] License: CC BY-NC 3.0 [Figure2] License: CC BY-NC 3.0 [Figure3] License: CC BY-NC 3.0 [Figure4] License: CC BY-NC 3.0

What limits movement is friction So then when you see things that are in motion in the world around you the are limited by friction. When a ball rolls down a street, rolling friction limits the affect of gravity on it and eventually causes it to stop

Quiz:

1. What is the force affecting you when you are biking?

2. Which force is the one affecting you when you are skiing.

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