4.1.1 - Kinetic Energy (KE): The Energy of Motion
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Practice Questions
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What is the formula for kinetic energy?
💡 Hint: Remember, kinetic energy is related to mass and speed.
If a bicycle with a mass of 80 kg is moving at 6 m/s, what is its kinetic energy?
💡 Hint: Use the kinetic energy formula.
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Interactive Quizzes
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What does kinetic energy depend on?
💡 Hint: Think about the formula.
True or False: A slower object always has less kinetic energy than a faster one.
💡 Hint: Consider the role of mass in kinetic energy.
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Challenge Problems
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A racecar has a mass of 800 kg and can reach speeds up to 45 m/s. Calculate its kinetic energy and discuss its significance in a race context.
💡 Hint: Apply the KE formula directly to find the value.
Two bicycles have equal mass. One is travelling at 10 m/s and the other at 20 m/s. Compare their energies and explain how this affects their safety.
💡 Hint: Calculate each using the formula and observe the differences.
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