Physics / Quick Reference
Formula Sheet
A compact collection of the most commonly used Physics formulas across the Your Answer V1 curriculum. Use it as a quick reference while studying rather than as a replacement for understanding the concepts behind each equation.
Mechanics
Motion, force, energy, momentum, and circular motion.
v = d/t
Distance divided by time.
a = Δv/Δt
F = ma
p = mv
K = ½mv²
U = mgh
W = Fs cos θ
P = W/t
ρ = m/V
J = FΔt = Δp
a = v²/r
F = mv²/r
Gravitation
Universal gravitation and gravitational fields.
F = Gm₁m₂/r²
g = GM/r²
W = mg
vₑ = √(2GM/R)
Matter & Fluids
Pressure, density, buoyancy, and fluid flow.
P = F/A
P = ρgh
Fᵦ = ρVg
A₁v₁ = A₂v₂
P + ½ρv² + ρgh = constant
Thermal Physics
Heat, temperature, gases, and thermodynamic processes.
Q = mcΔT
Q = mL
PV = nRT
ΔU = Q − W
η = useful output / total input
Waves
Wave motion, frequency, wavelength, and oscillations.
v = fλ
f = 1/T
ω = 2πf
a = −ω²x
Electricity
Charge, current, voltage, resistance, and electrical power.
I = Q/t
V = IR
P = VI
P = I²R
E = Pt
R = ρL/A
Magnetism
Magnetic forces, fields, flux, and electromagnetic induction.
F = qvB sin θ
F = BIL sin θ
Φ = BA cos θ
ε = −NΔΦ/Δt
Optics
Reflection, refraction, lenses, and light.
1/f = 1/u + 1/v
m = v/u
n = c/v
n₁ sin θ₁ = n₂ sin θ₂
1/f = 1/u + 1/v
Modern Physics
Relativity, quantum physics, and nuclear physics.
E = mc²
E = hf
p = h/λ
λ = h/p
hf = φ + Kmax
N = N₀(1/2)t/T₁/₂