IGCSE Edexcel Physics Equations

speed

distance/time

acceleration

change in velocity/time taken

force

mass x acceleration

weight

mass x gravitational field strength

applied force (Hooke's law)

spring constant x extension

momentum

mass x velocity

moment

force x perpendicular distance from the pivot

work done

force x distance moved

KE

1/2 x mass x speed^2

GPE

mass x gravitational field strength x height

efficiency

useful energy output/total energy input x 100%

density

mass/volume

pressure

force/area

pressure difference

density x gravitational field strength x height difference

charge

current x time

voltage

current x resistance

electrical power

voltage x current

primary voltage/secondary voltage

no. of primary turns/no. of secondary turns

primary voltage x primary current

secondary voltage x secondary current

wavespeed

frequency x wavelength

refractive index (n)

sin(angle of incidence)/sin(angle of refraction)

sin(critical angle)

1/refractive index

energy transferred=

work done

input power=

output power