Potential and Kinetic Energy

Which of the following would have more energy Which of the following would have more energy? Explain why in 2-3 sentences. A 125 kg person standing at the top of a 300 m cliff A roller coaster car that starts at 30 m high and weighs 3000 kg

What is energy? The ability to do work. Causes change and/or moves matter.

Energy is transferred through a medium. A medium is the matter or space for energy to move through.

Energy cannot be created or destroyed. Is transferable or transferred.

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What is potential Energy? Energy that is stored (used later)

1. Gravitational Potential Energy Potential energy based on an objects position (height) Potential Energy= Mass x Height x Gravity Gravity is 9.8 m/s2

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2. Elastic Potential Enegy Potential energy due to compression or expansion of an elastic object.

3. Chemical Potential Energy Potential energy stored between chemical bonds.

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What is kinetic Energy? Energy in motion. (being used) Kinetic Energy= ½ x Mass x Velocity

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Potential vs kinetic energy video