Physics Revision 0.0 / 5 ? PhysicsConservation of EnergyInternational BaccalaureateAQA Created by: Kate DorringtonCreated on: 15-06-17 21:32 Work Done (joules) Force x Distance 1 of 11 Gravitational potential energy (joules) Mass x Gravitational field strength x change in height 2 of 11 Kinetic Energy 1/2 x mass x speed 3 of 11 Change in objects GPE Weight x change in height 4 of 11 Power (watts) energy transfer to appliance/ time taken for energy to be transferred 5 of 11 Efficiency Power out/ Power in x 100 6 of 11 What is conservation of energy? The conservation energy states the energy cannot be created or destroyed, but only transformed in a closed system 7 of 11 What is a closed system? Closed system is like a closed book, the energy cannot get in out, and the total energy remains the same 8 of 11 What is the unit of energy? Joules 9 of 11 What is the unit of power? Watts 10 of 11 What are the different types of energy? Electrical - light - sound - kinetic - thermal - gravitational potential - chemical - elastic 11 of 11
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