Physical quantity | Units |
Fundamental units | |
Length (l) | Metre (m) |
Mass (m) | Kilogram (kg) |
Time (t) | Second (s) |
Temperature (T) | Kelvin (K) |
Electric current (I) | Ampere (A) |
Luminous intensity(Iv) | Candela (cd) |
Amount of substance (n) | Mole (mol) |
Supplementary units | |
Plane angle (α, β, θ, φ ) | Radian (rad) |
Solid angle (Ω) | Steradian (sr) |
Quantity | Symbol | Units |
Linear velocity | V | m/s |
Linear acceleration | a | m/s2 |
Angular velocity | ω | rad/s |
Angular acceleration | α | rad/s2 |
Mass density | ρ | kg/m3 |
Force, Weight | F, W | N ; 1N = 1kg-m/s2 |
Pressure | P | N/m2 |
Work, Energy, Enthalpy | W, E, H | J ; 1J = 1N-m |
Power | P | W ; 1W = 1J/s |
Absolute or dynamic viscosity | μ | N-s/m2 |
Kinematic viscosity | v | m2/s |
Frequency | f | Hz ; 1Hz = 1cycle/s |
Gas constant | R | J/kg K |
Thermal conductance | h | W/m2 K |
Thermal conductivity | k | W/m K |
Specific heat | c | J/kg K |
Molar mass or Molecular mass | M | kg/mol |