Practice - Module 3: Energy, Work, and Power
Practice Questions
Test your understanding with targeted questions
Define energy in your own words.
💡 Hint: Think about what happens during a physical activity.
What is work in physics?
💡 Hint: Consider pushing an object.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for work?
💡 Hint: Remember how work is calculated in physics.
True or False: Power is the rate at which work is done.
💡 Hint: Think about how fast something is moving.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A ball is dropped from a height of 20m. Calculate the gravitational potential energy at the top and the kinetic energy just before it hits the ground. Use g = 9.81 m/s².
💡 Hint: Think about energy conservation principles.
A machine does 500 J of work in 10 seconds. What is its power output? Then, if the machine was 80% efficient, how much energy did it consume?
💡 Hint: Use formulas for power and efficiency to approach the problem step by step.
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Reference links
Supplementary resources to enhance your learning experience.