AS Physics Work and Energy 0.0 / 5 PhysicsWork, Energy, PowerASAQA Created by: AmyeFarmerCreated on: 13-06-18 10:43 Define Work Force applied x displacement in the direction of the force 1 of 17 What is Work measured in? Nm or J 2 of 17 When is Mechanical Work done? When a force moves 3 of 17 What is the Work equation? W = Fs 4 of 17 Define Component The effect a forces has in a particular direction 5 of 17 What is a Component Triangle? A right-angled triangle in which the force formed the hypotenuse 6 of 17 What are the equations for a Component Triangle? W= FsCOS(angle) or W = FsSIN(angle) 7 of 17 Define Potential Energy Energy stored within a system as a result of position or condition 8 of 17 Define Kinetic Energy The energy of motion 9 of 17 What is the Principle of Conservation of Energy? Energy cannot be created or destroyed- it can only be transferred 10 of 17 What is the Work-Energy Principle? The change of energy of an object is equal to the net work done on the object 11 of 17 What is the Kinetic Energy equation? Ek = 1/2mv2 12 of 17 What is the Gravitational Potential Energy equation? Ep = mg(delta)h 13 of 17 Define Power The work done per unit time (rate of doing work) 14 of 17 What is Power measured in? J s-1 or J/s or W 15 of 17 What is the Power equation? Power = work done/time 16 of 17 What is the Efficency Equation? Useful power output/total imput 17 of 17

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