Practice Physics Formulas
Pick a formula, see how it works, then practise on a lined sheet — write the full solution yourself. Calculators stay optional when you want a quick check.
PE = mgh
mgh Formula – How to Calculate Potential Energy (Practice)
Practice PE = mgh — find energy, height, or mass with randomized problems and unit traps.
KE = ½mv²
½mv² Formula – How to Calculate Kinetic Energy (Practice)
Practice KE = ½mv² — speed-squared traps, km/h conversions, and PE↔KE chains.
W = Fd
W = Fd Formula – How to Calculate Work (Practice)
Practice W = Fd — parallel force, angles with cosθ, and work→power links.
W = mg
W = mg Formula – How to Calculate Weight (Practice)
Practice W = mg — mass vs weight, g = 9.8 vs 10, and Moon g problems.
U = ½kx²
½kx² Formula – Spring / Elastic Potential Energy (Practice)
Practice U = ½kx² — stretch vs force F = kx, and spring-launch energy.
P = W/t
P = W/t Formula – How to Calculate Power (Practice)
Practice P = W/t — watts vs joules, minutes→seconds traps, and P = Fv.
v = d/t
v = d/t Formula – How to Calculate Velocity (Practice)
Practice v = d/t — minute traps, km→m, and average speed vs averaging speeds.
a = (v − u)/t
a = Δv/t Formula – How to Calculate Acceleration (Practice)
Practice a = (v − u)/t — deceleration signs, km/h traps, and F = ma chains.
p = mv
p = mv Formula – How to Calculate Momentum (Practice)
Practice p = mv — grams vs kg, km/h traps, impulse, and sticky collisions.
V = IR
V = IR Formula – Ohm’s Law Practice
Practice V = IR — mA and kΩ traps, rearrangements, and P = I²R links.
ρ = m/V
ρ = m/V Formula – How to Calculate Density (Practice)
Practice ρ = m/V — cm³ and g/cm³ traps, weight from density, and mixtures.
Q = mcΔT
Q = mcΔT Formula – Specific Heat Practice
Practice Q = mcΔT — ΔT traps, grams→kg, and heater power from Q/t.
F = ma
F = ma Formula – Newton’s Second Law Practice
Practice F = ma — find F, m, or a, grams traps, and tension/weight chains.
F = kx
F = kx Formula – Hooke’s Law Practice
Practice F = kx — find F, k, or x, cm traps, and links to ½kx² energy.
f = μN
f = μN Formula – Friction Practice
Practice f = μN — find f, μ, or N, flat-floor N = mg, and F = ma chains.
v = fλ
v = fλ Formula – Wave Speed Practice
Practice v = fλ — find v, f, or λ, period T = 1/f, and cm/kHz traps.
s = ut + ½at²
SUVAT Formulas – Kinematics Practice
Practice SUVAT — s = ut + ½at², v = u + at, v² = u² + 2as, and stopping distance.
P = F/A
P = F/A Formula – Pressure Practice
Practice P = F/A — find P, F, or A, cm² traps, and hydraulic links.
Fc = mv²/r
Fc = mv²/r Formula – Centripetal Force Practice
Practice Fc = mv²/r — find F, v, r, or m, km/h traps, and μ on level turns.
τ = rF
τ = rF Formula – Torque Practice
Practice τ = rF — find τ, r, or F, sinθ form, and see-saw balance.
T = 2π√(L/g)
T = 2π√(L/g) Formula – Pendulum Practice
Practice T = 2π√(L/g) — find T, L, or g, mass traps, and Moon g.
R = v² sin(2θ)/g
Projectile Motion Formulas – Practice
Practice projectile motion — time of flight, range, max height, and complementary angles.
Fb = ρVg
Fb = ρVg Formula – Buoyancy Practice
Practice Fb = ρVg — displaced volume, float vs sink, and rearrangements.
F = kq₁q₂/r²
Coulomb’s Law Formula – Practice
Practice Coulomb’s law — force, separation, μC traps, and 1/r² scaling.
PV = nRT
PV = nRT Formula – Ideal Gas Practice
Practice PV = nRT — find P, V, n, or T; °C→K and litre traps.
n₁sinθ₁ = n₂sinθ₂
Snell’s Law Formula – Practice
Practice Snell’s law — find sinθ or n; air↔glass and TIR checks.
P = IV
P = IV Formula – Electric Power Practice
Practice electric power — P = IV, I²R, V²/R, mA traps, and energy Pt.
F = Gm₁m₂/r²
F = Gm₁m₂/r² Formula – Gravity Practice
Practice F = Gm₁m₂/r² — find F, r, or m; km traps and inverse-square ratios.
N = mg cosθ
N = mg cosθ Formula – Normal Force Practice
Practice normal force — N = mg on flat floors, N = mg cosθ on ramps, lift/push traps.
Rₜ = R₁ + R₂
Series & Parallel R – Equivalent Resistance Practice
Practice series and parallel resistance — add vs product/sum, kΩ traps, then Ohm’s law.
1/f = 1/dₒ + 1/dᵢ
1/f = 1/dₒ + 1/dᵢ – Lens & Mirror Practice
Practice 1/f = 1/dₒ + 1/dᵢ — find f, dᵢ, or |m|; unit and add-vs-reciprocal traps.
T = 2π√(m/k)
T = 2π√(m/k) Formula – SHM Practice
Practice T = 2π√(m/k) — find T, k, or m; amplitude traps and energy chains.