Physics P2 Formulae and equations The Equations that are needed for te Physics p2 AQA 0.0 / 5 ? PhysicsEquations and FormulaeGCSEAll boards Created by: SophieCreated on: 09-06-09 15:33 Acceleration Acceleration = Change In Speed ÷ Time Taken M/S² = M/S ÷ Seconds Used to calculate the acceleration of an object from a graph or given data 1 of 11 Weight Weight= Mass x Gravitational Field Strength N = Kg x N/Kg This is for when the object is on earth and is not falling. 2 of 11 Resultant Force Resultant Force= Mass x Acceleration N= Kg x M/S² Used when an object falls freely and the resultant force usually makes the object accelerate at 10M/S² This Equation then becomes: Weight = Mass x Acceleration due to gravity N= Kg x M/S² 3 of 11 Work Done Work Done= Force x Distance Moved Joules (J) = Neuton (N) x Metres (M) Work Done= Energy Transferred 4 of 11 Kinetic Energy Kinetic Energy = 1/2 mass x Speed² Joule (J) = 1/2 Kilogram (Kg) x Metre Per Second² (m/s²) Used To Calculate the energy of movement of an object Higher Level 5 of 11 Momentum Momentum = Mass x Velocity Kgm/s = Kg x M/S Total Mommentum before an interaction is the same as Total Momentum after, when there are no external forces... "Conservation of Momentum" 6 of 11 Force Force= Change In Momentum ÷ Time Taken N = Kg m/s ÷ s This is when a force acts on an object and chages its momentum Higher Level 7 of 11 Resistance Resistance = Potential Difference ÷ Current Ohms Ω = Volts V ÷ Amperes A This Equation is known as Ohms Law 8 of 11 Power (1) Power = Energy Transferred ÷ Time Watts (W) = Joules (J) ÷ Seconds (S) Measures the rate at which energy is moved from one place to another 9 of 11 Power (2) Current and P.D. can also be used to calculate the power of a device Power = Current x Potential Difference Watts (W) = Ampres (A) x Volts (V) 10 of 11 Charge Charge = Current x Time Coulombs (C) = Ampere (A) x Seconds (S) Where there is a current of one amp for one second the charge flowing is one coulomb Higher Level 11 of 11
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