Free reference

SPM Physics formula sheet.

Every formula across the Form 4 and Form 5 KSSM Physics syllabus, organised by chapter. Each chapter has a one-click jump into practice so you can apply the formula immediately.

43 formulas ·12 chapters ·Bahasa Melayu →

Form 4

Measurement

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Mean
$\overset{x}{ˉ} = \frac{\sum x}{n}$
- $\overset{x}{ˉ}$ — mean value
- $n$ — number of readings
Relative deviation
$\frac{Δ x}{x ˉ} \times 100%$
- $Δ x$ — mean deviation

Form 4

Force and Motion I

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Final velocity
$v = u + a t$
Displacement
$s = u t + \frac{1}{2} a t^{2}$
$v^2 = u^2 + 2as$
$v^{2} = u^{2} + 2 a s$
- $u$ — initial velocity
- $v$ — final velocity
- $a$ — acceleration
- $s$ — displacement
- $t$ — time
Newton's second law
$F = ma$
Momentum
$p = m v$
Impulse
$J = F t = Δ p$

Form 4

Gravitation

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Newton's law of gravitation
$F = G \frac{m _{1} m _{2}}{r ^{2}}$
- $G$ — gravitational constant, $6.67 \times 10^{-11}\ \text{N m}^2 \text{kg}^{-2}$
- $r$ — distance between centres
Gravitational field strength
$g = \frac{GM}{r ^{2}}$
Orbital velocity
$v = \frac{GM}{r}$
Escape velocity
$v_{e} = \frac{2 GM}{r}$

Form 4

Heat

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Heat (specific heat capacity)
$Q = m c Δ θ$
- $Q$ — heat energy (J)
- $m$ — mass (kg)
- $c$ — specific heat capacity
- $Δ θ$ — temperature change
Heat (specific latent heat)
$Q = m L$
- $L$ — specific latent heat
Gas law: pressure & volume (Boyle)
$P V = constant$
- at constant temperature
Gas law: pressure & temperature (Gay-Lussac)
$\frac{P}{T} = constant$
Gas law: volume & temperature (Charles)
$\frac{V}{T} = constant$

Form 4

Waves, Sound and Light

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Wave equation
$v = f λ$
- $v$ — wave speed
- $f$ — frequency
- $λ$ — wavelength
Period and frequency
$T = \frac{1}{f}$
Refractive index (Snell's law)
$n = \frac{sin θ _{1}}{sin θ _{2}}$
Critical angle
$sin θ_{c} = \frac{1}{n}$

Form 5

Force and Motion II

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Equilibrium
$\sum F = 0$
Projectile (horizontal)
$x = u_{x} t$
Projectile (vertical)
$y = u_{y} t - \frac{1}{2} g t^{2}$

Form 5

Pressure

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Pressure
$P = \frac{F}{A}$
- $P$ — pressure (Pa)
- $F$ — force (N)
- $A$ — area ($\text{m}^2$)
Hydrostatic pressure
$P = ρ g h$
- $ρ$ — fluid density
- $h$ — depth
Pascal's principle
$\frac{F _{1}}{A _{1}} = \frac{F _{2}}{A _{2}}$
Archimedes / buoyancy
$F_{b} = ρ V g$

Form 5

Electricity

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Ohm's law
$V = I R$
- $V$ — voltage (V)
- $I$ — current (A)
- $R$ — resistance ($\Omega$)
Power
$P = V I = I^{2} R = \frac{V ^{2}}{R}$
Energy
$E = P t$
Charge
$Q = I t$
Resistors in series
$R_{T} = R_{1} + R_{2} + \dots$
Resistors in parallel
$\frac{1}{R _{T}} = \frac{1}{R _{1}} + \frac{1}{R _{2}} + \dots$

Form 5

Electromagnetism

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Faraday's law of induction
$ε = - N \frac{d Φ}{d t}$
- $ε$ — induced emf
- $N$ — number of turns
- $Φ$ — magnetic flux
Transformer ratio
$\frac{V _{p}}{V _{s}} = \frac{N _{p}}{N _{s}} = \frac{I _{s}}{I _{p}}$
Transformer efficiency
$η = \frac{P _{s}}{P _{p}} \times 100%$

Form 5

Electronics

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Transistor current gain
$β = \frac{I _{C}}{I _{B}}$

Form 5

Nuclear Physics

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Mass-energy equivalence
$E = m c^{2}$
Radioactive decay
$N = N_{0} (\frac{1}{2})^{t / T_{1/2}}$
- $N_{0}$ — initial number of nuclei
- $T_{1/2}$ — half-life

Form 5

Quantum Physics

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Energy of a photon
$E = h f$
- $h$ — Planck constant, $6.63 \times 10^{-34}\ \text{J s}$
Photoelectric equation
$E_{k} = h f - W$
- $W$ — work function
de Broglie wavelength
$λ = \frac{h}{p}$

FAQ

Is this the official SPM Physics formula list?

These are the formulas covered by the KSSM Form 4 and Form 5 Physics syllabus, written in standard notation. SPM Paper 2 provides a formula sheet during the exam, but this reference is for daily practice and revision.

Are the formulas accurate?

They follow the SPM textbook conventions. If you spot a typo or want a formula added, report it from any question on QuizSprint and we will review.

Is this free?

Yes — completely free. No card, no paywall, no daily cap.

How do I drill these formulas?

Each chapter has a "Practice this chapter" button — it jumps you straight into multiple-choice questions that apply the formulas in context. The best way to learn a formula is to use it.

Where is the Bahasa Melayu version?

At /formula-fizik-spm. Formulas are universal but variable names and chapter labels are translated.

Apply the formulas in context.

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