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Understand how to calculate potential and kinetic energy using mass, height, and velocity. Learn about Joules, units, and formulas. Solve energy problems in physics easily with these examples.
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KE = ½mv2 Potential Energy Kinetic Energy PE = mgh UNITS - Joules • m (mass) – kg • v (velocity) – m/s • g (acceleration due to gravity) – 9.8 m/s2 • h (height) – m
What is the potential energy of an object if its mass is 20 kg and the height of its drop is 10 m?
What is the potential energy of an object is its mass is 600 kg and the height of its drop is 3 m?
What is the kinetic energy of an object whose mass is 100 kg and speed is 100 m/s?
What is the kinetic energy of an object whose mass is 20 kg and speed is 15 m/s?