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ConceptEquation or Symbol SI Unit(s)
Distance d m
Mass m kg
Time t s
Displacement Dd = d2 - d1m
Angular Displacement Δθ = θ2 - θ1rad
Distance PhysicsLessons.com equations m
DistancePhysicsLessons.com equations m
Time t s
Time Interval Dt = t2 - t1m
Time Period T = 1/f s
Frequency f = 1/T 1/s or Hz
Velocityv = Dd/Dtm/s
Velocity (wave)v = lfm/s
Final Velocity (t)vf = vi + atm/s
Final Velocity (d)vf2 = vi2 + 2adm/s
Speed (circular)v = 2pr/Tm/s
Angular Speedω = Δθ/Δtrad/s
Angular Accel.α = Δω/Δtrad/s2
Accelerationa = Dv/Dtm/s2
Acceleration (cent.)ac = v2/rm/s2
Acceleration (gravity)g = F/mm/s2
ForceF = maN or kgm/s2
WeightFwt = mgN or kgm/s2
Force (gravity)PhysicsLessons.com equationsN or kgm/s2
Force (Coulomb)F = k q1q2/(d2)N or kgm/s2
Force (magnetic)Fm = BqvN or kgm/s2
Force (magnetic)Fm = BILN or kgm/s2
Force (friction)Ff = mFNN or kgm/s2
TorqueΤ = FlNm
Momentump = mvkgm/s
Impulse MomentumDp = FDtkgm/s
Momentum Conservation p1 + p2= p'1 + p'2kgm/s
WorkW = FdJ or Nm
PowerP = W/tJ/s or W
PowerP = FvJ/s or W
PowerP = ΤωJ/s or W
Kinetic EnergyKE = (1/2)mv2J
Potential EnergyPE = mghJ
Pressurep = F/APa
Pressure (fluid)p = rhgPa
Pascal's PrincipalF1/A1 = F2/A2
Thermal EnergyQ = mCDTJ
Thermal EnergyQ = mHfJ
Thermal EnergyQ = mHvJ
Mirror & Lens1/f = 1/di + 1/dom
Magnificationm = hi/hono units
Magnificationm = -di/dono units
Diffractionl =xd/L = d siniJ
Charge q C (coulomb)
Electric FieldE = Fq/qN/C
CapacitanceC = q/Vfarads, F
Resistance (series)Rtotal = R1 + R2 + R3 +...Ohms
Resistance (parallel)1/Rtotal = 1/R1 + 1/R2 + 1/R3 Ohms
Electric CurrentI A
Electric CurrentI =Dq/tA
Electric CurrentI = V/RA
VoltageV Volt
Electric PowerP = VIW
Electric PowerP = I2RW
Electric PowerP = V2/RW
Nuclear EnergyE = mc2J
Quantum EnergyDE = hfJ
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