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Physics Energy

Physics Energy. Law of Conservation of Energy. energy cannot be created or destroyed only transferred from one form to another. Electric  Light. Chemical  Mechanical. 2 forms of mechanical energy. 1. Kinetic energy (KE) -energy due to motion KE = ½ mv 2 (J) (kg)(m/s) 2

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Physics Energy

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  1. PhysicsEnergy

  2. Law of Conservation of Energy • energy cannot be created or destroyed only transferred from one form to another Electric  Light Chemical  Mechanical

  3. 2 forms of mechanical energy 1. Kinetic energy (KE) -energy due to motion KE = ½ mv2 (J) (kg)(m/s)2 m is the mass of the object in kg v is the velocity in m/s

  4. 2. Potential energy (PE) -energy due to position or condition ex: book high on a shelf stretched rubber band wound up clock Known as gravitational potential energy PE = m g h (J) (kg)(m/s2)(m) m is the mass of the object in kg g is the acceleration due to gravity 9.81m/s2 h is the height in m

  5. Check up: • Where does the pendulum have greatest PE? • Where does the pendulum have greatest KE? Greatest PE Greatest PE Greatest KE

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