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Physics gcse

Speed m/s Distance m ————— Time s
Acceleration m/s^2 Change in velocity m/s —————————— Time s
Force N Mass kg X acceleration m/s^2
Weight N Mass kg X gravitational field strength N/kg
Momentum kgm/s Mass kg X velocity m/s
Change in gravitational potential energy J Mass kg X gravitational field strength N/kg X height m
Kinetic energy J 1/2 X mass kg X velocity^2 (m/s)^2
Efficiency Useful energy J ——————— (X100 for %) Total energy J
Wave speed m/s Frequency Hz X wavelength m OR Distance m ————— Time s
Power W Work done J Energy transferred —————— OR ————————— Time Time
Moment of a force Nm Force N X distance normal to the direction of the force m
Energy transferred J Charge moved c X potential difference v
Charge c Current A X time s
Potential difference v Current A X resistance ohmes
Electrical power w Current A X potential difference v OR Current^2 A^2 X resistance ohmes
Density kg/m^3 Mass kg ———— Volume m^3
Force exerted on a spring N Spring constant N/m X extension m
Pressure Pa Force normal to surfacr N ———————————— Area of surface m^2
Created by: Smitb



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