5.12 - Summary
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Practice Questions
Test your understanding with targeted questions
Define work in physics.
💡 Hint: Consider force and distance for calculating work.
What is the unit of energy?
💡 Hint: Think about the same units used for work.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the definition of work in physics?
💡 Hint: Think about the formula W = F * d.
Is momentum always conserved in a collision?
💡 Hint: Consider the principle of conservation of momentum.
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Challenge Problems
Push your limits with advanced challenges
A 1000 kg car moving at 20 m/s collides elastically with a stationary 1000 kg car. Calculate their final velocities after the collision.
💡 Hint: Use conservation of momentum and kinetic energy formulas.
A force of 10 N pushes a box across a floor for 5 meters, then suddenly stops while the box continues to slide for another 2 meters due to inertia. Calculate total work done on the box during its slide.
💡 Hint: Consider work done only against friction during the distance you apply force.
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Reference links
Supplementary resources to enhance your learning experience.