Base Physical Quantity> | b>Symbol | Meaning | Dimensions
in SI | SI unit | | a href="/encyclopedia/Length" title="Length">Length | l | The one dimensional extent of an object | L | metre (m) |
| a href="/encyclopedia/Mass" title="Mass">Mass | m | The amount of matter in an object | M | kilogram (kg) |
| a href="/encyclopedia/Time" title="Time">Time | t | The duration of an event | T | second (s) |
| a href="/encyclopedia/Current-(electricity)" title="Current (electricity)">Current | I | The rate of flow of electrical charge | I | ampere (A) |
| a href="/encyclopedia/Temperature" title="Temperature">Temperature | T | . | Θ | kelvin (K) |
| a href="/encyclopedia/Amount-of-substance" title="Amount of substance">Amount of substance | n | Number of particles compared to number of atoms in 0.012 kg C12 | ... | mol (mol) |
| a href="/encyclopedia/Luminous-intensity" title="Luminous intensity">Luminous intensity | L | | ... |candela (cd) |
| b>Special Physical Quantity | Symbol | Meaning | Dimensions | SI unit |
| a href="/encyclopedia/Angle" title="Angle">Angle | θ | . | one | radian (rad) |
| a href="/encyclopedia/Solid-angle" title="Solid angle">Solid angle | . | . | one | steradian (sr) |
| b>Derived Physical Quantity | Symbol | Meaning | Dimensions | SI unit |
| a href="/encyclopedia/Area" title="Area">Area | A | The two dimensional extent of an object | L2 | square metre |
| a href="/encyclopedia/Volume" title="Volume">Volume | V | The three dimensional extent of an object | L3 | cubic metre |
| a href="/encyclopedia/Linear-density" title="Linear density">Linear density | ρl | The amount of mass per unit length of a 1-dimensional object | M L-1 | kilogram per metre |
| a href="/encyclopedia/Area-density" title="Area density">Area density | ρA | The amount of mass per unit area of a 2-dimensional object | M L-2 | kilogram per square metre |
| Volume) Density | ρ | The amount of mass per unit volume of a 3-dimensional object | M L-3 | kilogram per cubic metre |
| a href="/encyclopedia/Speed" title="Speed">Speed | v | The rate of change of position of an object | L T-1 | metre per second |
| a href="/encyclopedia/Acceleration" title="Acceleration">Acceleration | a | The rate of change of speed of an object | L T-2 | metre per second squared |
| a href="/encyclopedia/Momentum" title="Momentum">Momentum | p | The product of an object's mass and its velocity | M L T-1 | kilogram metre per second or newton second |
| a href="/encyclopedia/Impulse" title="Impulse">Impulse | p | The product of a force and the time over which it acts | M L T-1 | kilogram metre per second or newton second |
| a href="/encyclopedia/Force" title="Force">Force | F | That which causes or tends to cause acceleration in an object with mass | M L T-2 | newton = kilogram metre per second squared |
| a href="/encyclopedia/Mechanical-work" title="Mechanical work">Work | W | The energy dissipated by a force moving through a distance, and calculated from the product of the force and the distance moved in the direction of the force | M L2 T-2 | joule = newton metre |
| a href="/encyclopedia/Energy" title="Energy">Energy | E | The capacity of a body or system to do work | M L2 T-2 | joule = newton metre |
| a href="/encyclopedia/Kinetic-energy" title="Kinetic energy">Kinetic energy | Ek | The energy that a body possesses by virtue of its speed or velocity | M L2 T-2 | joule = newton metre |
| a href="/encyclopedia/Potential-energy" title="Potential energy">Potential energy | Ep | The energy that a body possesses by virtue of its position in a potential field | M L2 T-2 | joule = newton metre |
| a href="/encyclopedia/Power-(physics)" title="Power (physics)">Power | P | The rate of change of energy over time | M L2 T-3 | watt = joule per second |
| a href="/encyclopedia/Pressure" title="Pressure">Pressure | p | The amount of force per unit area | M L-1 T-2 | pascal = newton per square metre |
| a href="/encyclopedia/Electric-Charge" title="Electric Charge">Electric Charge | Q | . | I T | coulomb = ampere second |
| a href="/encyclopedia/Moment-(physics)" title="Moment (physics)">Moment | . | . | ? | . |
| a href="/encyclopedia/Torque" title="Torque">Torque | T | . | M L2 T-2 | newton metre |
| a href="/encyclopedia/Phase-angle" title="Phase angle">Phase angle | . | . | one | radian |
| a href="/encyclopedia/Wavelength" title="Wavelength">Wavelength | λ | . | L | metre |
| a href="/encyclopedia/Frequency" title="Frequency">Frequency | f | . | T-1 | hertz |
| a href="/encyclopedia/Angular-speed" title="Angular speed">Angular speed | . | . | T-1 | radian per second |
| a href="/encyclopedia/Angular-velocity" title="Angular velocity">Angular velocity | . | . | T-1 | radian per second |
| a href="/encyclopedia/Angular-acceleration" title="Angular acceleration">Angular acceleration | . | . | T-2 | radian per second squared |
| a href="/encyclopedia/Moment-of-inertia" title="Moment of inertia">Moment of inertia | . | . | M L2 | kilogram metre squared |
| rea moment of inertia | . | . | L4 | |
| a href="/encyclopedia/Angular-momentum" title="Angular momentum">Angular momentum | . | . | ? | . |
| a href="/encyclopedia/Rotational-energy" title="Rotational energy">Rotational energy or Angular kinetic energy | . | . | ? | . |
| a href="/encyclopedia/Magnetic-flux" title="Magnetic flux">Magnetic flux | . | measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field | M T-2 I-1 | tesla |