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# Friction

## The resistance that one surface or object encounters when moving over another.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Friction

In this lesson students will learn about friction, the difference between static and kinetic friction and how to solve problems involving friction.

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## Friction

Defines friction and introduces equations using friction.

2
• Interactive Simulations

## Malt Shop

Learn about kinetic friction and how objects slide to a stop under the influence of friction.

0
• Interactive Simulations

## Sprinter

0
• Interactive Simulations

Coulombs law

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• Simulation

## Friction Simulation

Explore how much force is needed to overcome the forces of friction.

1
• Simulation

## Ramp Forces and Motion

Shows how ramps affect forces and motion.

0
• Video

## Friction Problem

Shows how to calculate the coefficient of friction using an object that is in constant motion.

0
• Video

## Friction Explained

Illustrates how friction apply to dragging everyday objects with a demonstration.

1
• Practice
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## Friction Quiz - PPB

Calculate the coefficient of static and kinetic friction, understand the nature of friction. Requires basic trigonometry and algebra.

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## Friction Quiz

Reviews sliding and static friction, the coefficient of friction, and calculations of resultant acceleration when friction is taken into account.

0
• Critical Thinking

## Friction Discussion Questions

A list of student-submitted discussion questions for Friction.

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## Friction

This is an activity for students to complete while reading the Friction Concept

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• Real World Application

## What Causes Friction?

1
• Real World Application

## Mass Doesn't Matter

Discover the role mass plays in motion along inclined planes.

0
• Real World Application

## Slippery When Wet

Discover the different type of friction and what they mean for movement.

0
• Real World Application

## Race to The Finish

Learn how friction plays a role in drag racing.

0
• Real World Application

## The Flowers Are Still Standing

Discover the physics behind this famous parlor trick.

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• Study Guide