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# Physics Equations

TermDefinition
Speed Speed = Distance ÷ Time
Force Force = Mass × Acceleration
Velocity Velocity = Displacement ÷ Time
Acceleration Acceleration = (Final Velocity - Initial Velocity) ÷ Time taken
Weight Weight = Mass × Gravitational Field Strength
Momentum Momentum = Mass × Velocity
Force (momentum) Force = Mass × ((Final velocity - Initial Velocity) ÷ Time) AKA Force = Change in Momentum ÷ Time
Kinetic Energy Kinetic Energy = 1/2 × Mass × Velocity^2
9 Energy Types Sound, GPE, Kinetic, Light, Heat/Thermal, Electrical, Nuclear, Elastic, Chemical
Efficiency Efficiency = Useful Energy Out ÷ Total Energy in
Change in GPE Change in GPE = Mass × Gravitational Field Strength × Change in Vertical Height
Wavelength The distance between two wave peaks
Amplitude The height of a peak
Wavespeed Wavespeed = Frequency × Wavelength
Human frequency hearing range 20Hz - 20kHz
Distance Distance = Time × Speed
Work Work = Force × Distance
Power Power = Work Done ÷ Time
Stopping Distance Stopping Distance = Thinking Distance + Braking Distance
Moment Moment = Force × Distance Moved Perpendicular to the direction of force from the pivot
Power (Time) Power = Energy Transferred ÷ Time take
Charge Charge = Current × Time
Energy Transferred Energy Transferred = Charge × Potential Difference
Potential Difference Potential Difference = Current × Resistance
Mains Voltage 230V
Power (Resistance)
Created by: AlexWackett

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