4.7 - Friction and its Effect on Motion
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Practice Questions
Test your understanding with targeted questions
What is friction?
💡 Hint: Think about experiences where things don’t slide easily.
Name two types of friction.
💡 Hint: One prevents motion and one opposes it.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What type of friction opposes the start of motion?
💡 Hint: Think about how difficult it is to start moving a stationary object.
True or False: Kinetic friction is generally stronger than static friction.
💡 Hint: Consider how much force it takes to start versus continue moving an object.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A sled weighing 60 kg slides down a hill at a coefficient of kinetic friction of 0.2. Calculate the frictional force acting on the sled while sliding.
💡 Hint: Remember to find the normal force first!
If the coefficient of static friction between a car tire and the road is 0.7, what is the maximum static frictional force that can act on a 1000 kg car?
💡 Hint: Start by finding the weight of the car to determine the normal force.
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