IGCSE Physics Formulas (Updated Every Summative)

Velocity

Displacement/Time

Speed

Distance/Time

Average Speed

Total Distance/Time

Average Velocity

Total Displacement/Time

Acceleration

Change in Velocity/Time OR FMA Triangle

Weight

Mass x Gravity

Value of Gravity (IGCSE)

10

Density

Mass/Volume

Resultant Force

Mass x Acceleration

Hooke’s Law

Force = Spring Constant x Extension (FKX Triangle)

Momentum

Mass x Velocity

Impulse

Force x Time OR Change in momentum

Law of Conservation of Momentum

Initial Momentum = Momentum After

Pressure in Solids

Force/Area

Pressure in Liquids

Density x Gravity x Height

Moment of a Force

Force x Distance from a Pivot

Kinetic Energy

½mv²

G.P.E

Mass x Gravity x Height

Work Done

Force x Distance

Efficiency

Useful Energy Output/Total Energy Input

Power

Work/Time

Celsius to Kelvin

Celsius temperature + 273

Specific heat capacity

Thermal energy supplied/(mass x change in temperature)

Speed of wave

Frequency x Wavelength

Refractive Index

sin i/sin r or c/v

Speed of light in a vacuum

3 × 10^8 m/s