| Quantity measured | Formula |
| Power | Power = force x velocity |
| Power | Power = VI = V2/R = I2R |
| Pressure | Pressure = Force/Area |
| Refractive index | Refractive index (n) = sin i/sin r = ci/cr |
| Resistivity | Resistivity (r) = RA/L |
| Resistors in parallel | 1/R = 1/R1 + 1/R2 |
| Resistors in series | R = R1 + R2 |
| Speed (velocity) | Distance/time |
| Strain | Strain = Extension/original length |
| Stress | Stress (s) = F/A |
| Torque (moment of a couple) | Torque = Force x distance between the forces |
| Uniformly accelerated motion | s = ut + at2 v2 = u2 + 2as |
| Wave speed | Wave speed = frequency x wavelength |
| Weight | Weight = mg |
| Work done | Work done = Fscosq |
| Young modulus | E = stress/strain = FL/eA |