Physics Equations Flashcards
angular speed
ω = ω₀ + α * t
angular acceleration
α = Δω / Δt
centripetal acceleration
a_c = v² / r
v: velocity
r: radius
centripetal force
F_c = m * v² / r
kinetic energy
KE = 0.5 * m * v²
potential energy
PE = m * g * h
h: height
momentum
p = m * v
Conservation of Momentum
m₁ * v₁i + m₂ * v₂i = m₁ * v₁f + m₂ * v₂f
m₁, m₂: masses
v₁i, v₂i: initial velocities
v₁f, v₂f: final velocities
Gravitational Force of Attraction
F = G * m₁ * m₂ / r²
G: gravitational constant
m₁, m₂: masses
r: distance
frequency
f = 1 / T
T: period
period
T = 1 / f
wave speed
v = f * λ
λ: wavelength
wave frequency
f = v / λ
index of refraction
n = c / v
c: speed of light in vacuum
speed of light in a substance
v = c / n
Coulomb’s law
F = k * q₁ * q₂ / r²
k: Coulomb’s constant
q₁, q₂: charges
Magnitude of the Electric Field
E = F / q
potential difference (voltage)
V = W / q
W: work done
average speed
v_avg = Δd / Δt
Δd: total distance
Δt: total time
average velocity
v_avg = Δx / Δt
Δx: displacement
Δt: time
acceleration
a = Δv / Δt
Δv: change in velocity
projectile motion (horizontal motion)
x = v₀x * t
v₀x: initial horizontal velocity
t: time
projectile motion (vertical motion)
y = v₀y * t - 0.5 * g * t²
x: horizontal distance
y: vertical height
v₀x: initial horizontal velocity
v₀y: initial vertical velocity
g: acceleration due to gravity
t: time
projectile motion (Initial Velocity Components)
v₀x = v₀ * cos(θ)
v₀y = v₀ * sin(θ)
projectile motion (time of flight)
t = 2 * v₀y / g
projectile motion (maximum height)
h_max = v₀y² / (2 * g)
projectile motion (range)
R = v₀² * sin(2θ) / g
force
F = m * a
m: mass
a: acceleration
angular displacement
θ = ω₀ * t + 0.5 * α * t²
ω₀: initial angular velocity
α: angular acceleration
t: time
