Physics P2.2 Revision 0.0 / 5 ? PhysicsEquations and FormulaeGCSEAQA Created by: abcaseasyas123Created on: 27-02-14 19:12 When you pedal on a bike where does the energy transfered go to? It is lost though friction as heat 1 of 11 What is the realationship between enery and work done? Energy transfered = Work done 2 of 11 What is work? When an obeject is moved by a force we say work has been done on the force 3 of 11 A wheelbarrow is moved 5m with a force of 50N. How much work is done? W=F×D 50N×5m=250Nm 4 of 11 Why do brake pads become warm? Work is done to overcome friction; is transferred as energy that heats the brake pads and the surroundings 5 of 11 What is weight? Weight = Gravitational field strength × Mass (kg) 6 of 11 What are the units in gravitational potential energy? Ep (Joules) Mass(kg) change in height (m) Gravitational field strength (N/kg) 7 of 11 The equation for kinetic energy? Kinetic enegy (J) = 0.5 × Mass (kg) × Velocity2 (m/s) 8 of 11 What is elastic potiential energy? Elastic potiencial energy stored in an object when work is done to change its shape. 9 of 11 How do we calculate momentum? P = M × V 10 of 11 What is the unit of momentum? kg m/s 11 of 11
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