4 types of friction

by travis gore

1 static friction

static friction is the friction that exists between a stationary object and the surface on which it's resting. A frictional force occurs when you try to push an object alongside a surface. Once the objects have already started moving, kinetic friction takes over.
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2 slidding friction

refers to the resistance created by two objects sliding against each other.

ex- Rubbing both hands together to create heat.

A sled sliding across snow or ice.

Skis sliding against smow.

A person sliding down a slide is an example of sliding friction.

A coaster sliding against a table.

A washing machine pushed along a floor.

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3 fluid friction

Fluid friction is the friction between a solid object as it moves through a liquid or a gas. The drag of air on an airplane or of water on a swimmer are two examples of fluid friction.
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4 rolling friction

is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface. ex car on road
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