Practice - Summary of Key Equations and Concepts - 4.6
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Practice Questions
Test your understanding with targeted questions
What is the formula for displacement?
💡 Hint: Think about how to express the change in position.
Define work in physics.
💡 Hint: Remember the factors that contribute to work.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for average velocity?
💡 Hint: Recall how we define average velocity.
Is kinetic energy dependent on mass and velocity? True or False?
💡 Hint: Think about the kinetic energy equation.
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Challenge Problems
Push your limits with advanced challenges
A 60 kg skier starts from rest and descends a slope, reaching a speed of 15 m/s. Calculate the work done by gravity, assuming a height loss of 30 m.
💡 Hint: Consider the gravitational potential energy change.
Two ice skaters collide on a frictionless surface – Skater A with mass 50 kg moving at 4 m/s and Skater B with mass 75 kg moving in the opposite direction. Calculate the final velocity of the skaters if they cling together after the collision.
💡 Hint: The initial momentum before the collision should equal the momentum after.
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Reference links
Supplementary resources to enhance your learning experience.