Energy!.

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Presentation transcript:

Energy!

Energy Definition: Energy is all around us! Energy measured in Joules Physics: Energy is the ability to do work. Work in physics means moving something. So energy is what allows motion to change. Energy is all around us! Energy measured in Joules Two main categories: Kinetic energy Potential energy

Kinetic energy KE Energy of motion KE = ½ mv2 Any motion has kinetic energy Examples: Sound wave Light wave Rolling car

Potential Energy PE Stored energy due to position Many kinds: Elastic potential energy Chemical potential energy Gravitational potential energy Equation for GPE: GPE=mgh

Conversions Energy can be converted from one form to another No energy is lost!

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