Physics Equations 0.0 / 5 PhysicsEquations and FormulaeIGCSEEdexcel Created by: Emilia PriceCreated on: 13-05-13 20:06 Speed speed = distance/time 1 of 26 Acceleration acceleration = change in velocity/time 2 of 26 Force force = mass x acceleration 3 of 26 Weight weight = mass x gravitational field strength 4 of 26 Momentum momentum = mass x velocity 5 of 26 Force force = change in momentum/time 6 of 26 Momentum force x time = change in momentum 7 of 26 Moment moment = force x perpendicular distance from pivot 8 of 26 Orbital speed orbital speed = 2πr/T 9 of 26 Power power = current x voltage 10 of 26 Energy energy = power x time 11 of 26 Energy energy = current x voltage x time 12 of 26 Current current in amps = change in coulombs/time 13 of 26 Voltage voltage = current x resistance 14 of 26 Frequency frequency = 1/period 15 of 26 Wave Speed wave speed = frequency x wavlength 16 of 26 Law of Refraction refractive index = sin i/sin r 17 of 26 Refractive Index refractive index = 1/sin c 18 of 26 Efficiency efficiency = useful energy output/total energy output 19 of 26 Work work = force x distance 20 of 26 Gravitational Potential Energy GPE - mass x gravitational field strength x height 21 of 26 Weight weight = mass x gravitational field strength 22 of 26 Kinetic Energy KE = 1/2 mass x speed (2) 23 of 26 Power power = work done/time taken 24 of 26 Density density = mass/volume 25 of 26 Pressure pressure = force/area 26 of 26

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