International GCSE Physics and International GCSE Science (Double Award) Equation List - 4PH1 4SD0 - May–June 2025

Sep 5, 2026

Equation list for Pearson Edexcel International GCSE Physics (4PH1) and International GCSE Science Double Award (4SD0), issued for the May–June 2025 assessment window. Provides the set of core formulae learners may need across Forces and Motion, Electricity and Waves, Energy resources and transfers, Solids, liquids and gases, and Astrophysics, plus additional Physics-only equations for specified papers. Includes standard physics definitions and relationships such as v= f×λ, F= m×a, P= I×V, and E= I×V×t.

LanguageEnglish

CategoryExam

FormatPDF

Pages4

Reading Time10 min

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International GCSE Physics and International GCSE Science (Double Award) Equation List

Forces and Motion

Electricity and Waves

Energy resources and energy transfers

Solids, liquids and gases

Astrophysics

Additional equations for International GCSE Physics

Pearson Edexcel International GCSE (9–1) May–June 2025 Assessment Window | | Syllabus
reference | | --- | --- | | International GCSE Physics and International GCSE Science (Double Award) Equation List | | 4PH1 4SD0 You are not permitted to take this notice into the examination. A version of this equation list will be included with the May–June 2025 question papers. This document is valid if downloaded from the Pearson Qualifications website. W84708A ©2025 Pearson Education Ltd. 1/ *W84708A* Continue | These equations may be required for both International GCSE Physics (4PH1) and International GCSE Combined Science (4SD0) papers. | | --- | | 1. Forces and Motion average speed = disttiance~~ ~~movme~~ ~~takened acceleration = cha~~ ~~ntigemei~~ ~~n~~ ~~vetakeloncity~~ ~~ a ~~ ~~􀀝~~ ~~v~~ ~~~~ ~~u~~ ~~􀀜 (final speed)2 = (initial speed)2 + (2 × acceleration × distance moved)
v2 u 2 􀀞 􀀜 2􀀝a􀀝s􀀛 force = mass × acceleration F = m × a weight = mass × gravitational field strength W = m × g 2. Electricity power = current × voltage P = I × V energy transferred = current × voltage × time E = I × V × t voltage = current × resistance V = I × R charge = current × time Q = I × t energy transferred = charge × voltage E = Q × V 3. Waves | | wave speed = frequency × wavelength v =f × λ frequency = time~~ ~~1period f = 1T sin angle of incidence 􀀞 refractive index = sin angle of refraction􀀞 n =
sin i
sin r sin critical angle 􀀞 􀀝 refractie~~ ~~index sin c = 1n | W84708A 2 Continue | | | --- | | 4. Energy resources and energy transfers efficiency = useful energy output ×100%
total energy output work done = force × distance moved W = F × d gravitational potential energy = mass × gravitational field strength × height
GPE = m × g × h kinetic energy = 12 × mass × speed2 1 2
KE ~~ ~~ 􀀞 m 􀀞 v
2 power =
work done
time taken WP = ~~ ~~
t 5. Solids, liquids and gases density = vmol~~ ~~assume 􀀞 m V pressure =
force
area p = F A pressure difference = height × density × gravitational field strength
p = h × ρ × g pressure = constant p1 p2
=
T T
1 2 temperature pressure × vo lume = constant p 1 × V1 = p2 × V2 8. Astrophysics | | orbital speed = 2~~ ~~􀀞ti~~ ~~omrebpitaerliraoddius~~ ~~ v ~~ ~~2~~ ~~􀀞~~ ~~􀀝T~~ ~~􀀞~~ ~~r
The equations on the following page will only be required for International GCSE Physics. | W84708A 3 Continue | These additional equations may be required in International GCSE Physics papers 2P and 2PR. | | --- | | 1. Forces and Motion momentum = mass × velocity p = m × v force = change in momentum
time taken F 􀀝 mv 􀀞mu􀀜 t moment = force × perpendicular distance from the pivot 5. Solids, liquids and gases change in thermal energy = mass × specific heat capacity × change in temperature
ΔQ = m × c × ΔT 6. Magnetism and electromagnetism relationship between input and output voltages for a transformer
input (primary) voltage primary turns
=
output (secondary) voltage secondary turns input power = output power Vp Ip = Vs Is
for 100% efficiency 8. Astrophysics | | change in wavelength velocity of a galaxy 􀀞 0 􀀜 v
= ~~ ~~ 􀀝 􀀝 ~~ ~~
reference wavelength speed of light 0 0 c
END OF EQUATION LIST
W84708A 4 |

FAQs

Which subjects and codes use this equation list?

It applies to International GCSE Physics (4PH1) and International GCSE Science (Double Award) (4SD0) papers, with some additional equations required only for Physics papers 2P and 2PR.

When is this equation list valid?

The document is valid for the May–June 2025 assessment window.

What kinds of equations are included?

It includes formulae for Forces and Motion, Electricity, Waves, Energy resources and transfers, Solids/liquids/gases, Magnetism and electromagnetism, and Astrophysics.

Sep 5, 2026

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