4.3 - Energy
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Practice Questions
Test your understanding with targeted questions
Define energy in your own words.
💡 Hint: Think about what you need to move or lift something.
What units are used to measure energy?
💡 Hint: Consider what unit is commonly used in physics.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for kinetic energy?
💡 Hint: Look for the formula that includes mass and speed squared.
True or False: Potential energy is zero when an object is on the ground.
💡 Hint: Think about what happens to potential energy when height decreases.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Calculate the mechanical energy for an object with 4 J of kinetic energy and 6 J of potential energy.
💡 Hint: Simply add kinetic energy and potential energy together.
If a 3 kg object is lifted to a height of 5 m, calculate its potential energy. Use g = 9.81 m/s².
💡 Hint: Plug the values into the potential energy formula and calculate.
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