9.2.3 - Activity 9.3
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Practice Questions
Test your understanding with targeted questions
What force opposes the motion between surfaces?
💡 Hint: Think about the force that stops a moving object.
What happens when a pencil cell rolls on a rough surface compared to a smooth surface?
💡 Hint: Consider which surface would provide more resistance.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is friction?
💡 Hint: Think about what happens when you try to slide something across a table.
True or False: Friction can exist between two smooth surfaces.
💡 Hint: Consider the surfaces closely; are they ever absolutely smooth?
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Challenge Problems
Push your limits with advanced challenges
If you double the weight of an object sliding on a surface while keeping a constant surface roughness, how does this affect the friction force? Provide calculations.
💡 Hint: Remember the relationship between weight and normal force.
Design a model to compare rolling friction and sliding friction using common classroom objects. Explain your findings.
💡 Hint: Reflect on the differences in surface contact.
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