Because they r standard units for measurement used everywhere in d world.
SI units
because it shows the measurements in physical science
SI units are defined for physical measurements, like measurements of mass, length, etc. - there are no specific SI units for plain numbers.SI units are defined for physical measurements, like measurements of mass, length, etc. - there are no specific SI units for plain numbers.SI units are defined for physical measurements, like measurements of mass, length, etc. - there are no specific SI units for plain numbers.SI units are defined for physical measurements, like measurements of mass, length, etc. - there are no specific SI units for plain numbers.
In the SI, energy is measured in Joules.Some other units (not part of the SI) include: erg; BTU; calores; and others.In the SI, energy is measured in Joules.Some other units (not part of the SI) include: erg; BTU; calores; and others.In the SI, energy is measured in Joules.Some other units (not part of the SI) include: erg; BTU; calores; and others.In the SI, energy is measured in Joules.Some other units (not part of the SI) include: erg; BTU; calores; and others.
Meter per secondThere is no standard SI unit for velocity actually. It is a derived unit. Velocity is distance traveled per time together with the direction of motion. The SI unit of distance is the meter (m) and the SI unit of time is the second (s).So the units of velocity in SI units is meters/second (m/s), or ms-1See the Related Questions link to the left "What are all the SI units" for more information about SI units.CommentDerived units are SI units.
SI units
SI units are important because it is a universal means of communicating different types of measurements.
The four units that are not SI are1. seconds2. degree3. meter4. kilogram
In most of the world, everything that is measured, is measured in SI units. Time, distance, mass, weight, area, volume and so on.
It means something outside scientific measurements. So, it cannot include SI units. For example, it can include the time and etc.
My country is one of the last three holdouts in the world that hasn't yet convertedto the metric system. So, while I may use SI units for myself, I'm forced to use theso-called "customary" system whenever I need to report or discuss measurementswith anyone else. The reason that I don't use SI units to any greater extent in mydaily life is that nobody around me is using them.
In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.
because it shows the measurements in physical science
Derived SI units.
SI and metric are the same units.
International System of Units (SI)
Base units