Energy - This gets transferred when work is done, Joule - This is the unit of energy, Kinetic Energy - This is the sort of energy that a body has if it is moving (1/2 mv2), Conservation of Energy - Energy is neither created nor destroyed but only changed from one form to another, Gravitational Potential Energy - This is the energy a body has due to it's position in a gravitational field. Near the surface of the Earth we calculate the change in this energy with mg∆h, Power - Work done per second, Elastic potential energy - The kind of energy stored in a stretched spring, Efficiency - The % of input energy used to do useful work, Work - When this gets done, energy is transferred, Watt - This is the unit of power, Heat - This is a type of energy that an object has because of the motion of it's particles.,

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