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Module 3 - Chapter 5 - Work, Energy and Power, image - Coggle Diagram
Module 3 - Chapter 5 - Work, Energy and Power
Work done
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1J is the work done when a force of 1N moves its point of application 1m in the direction of the force
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Conservation of energy
Energy
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Forms
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Electrical potential energy - energy of electrical charges due to their position in an electric field
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Radiant/ EM energy - energy associated with all EM waves, stored within the oscillating electric/ magnetic fields
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Energy cannote be created or destroyed, but it can be transferred from one form to another
Kinetic energy
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For objects travelling at the same speed, KE is directly proportional to the mass
For a given object, the KE is directly proportional to the square of the speed
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Energy exchange
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Speed of a roller coaster at the bottom is given by 
Power
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Power and motion
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Rate of work done by the forward force equals to the rate of work done against the frictional forces acting on the car
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speed of the object is
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Efficiency
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Greater the efficient, the greater the percentage of input energy converted
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