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TOPIC 2-MECHANICS-FRICTION
Friction
Grade Level:
11
Subject:
Science
Start Date:
End Date:
Goal Summary:
To explain friction and how components adjust the amount of friction
Standards Met:
Essential Questions:
I. How would you feel running a 100m on a track? How would that differ if you had to run a 100m on ice?
II. How easy is it to start pushing a car in neutral? How would your effort change once you get it going?
III. How hard is it to push a refrigerator? How would it differ if you had to push it up a hill?
Understandings:
The ratio b/w the force necessary to move 1 surface horizontally over another & pressure b/w 2 surfaces.
Static means still or at rest & Kinetic means moving
Then coefficient of friction will change from static to kinetic
Content Goals:
Students should know the difference in friction between static and kinetic systems, how difference surfaces changes friction & how angles affect friction.
Skill Goals:
Students will be able to mathematically calculate frictional force, identify coefficients of friction and the normal force.
Other Information:
LAB: friction lab will reinforce that conceptual with the applied physics.
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