Units of Length and Mass are m and kg which are fundamental units.

Fundamental quantity is defined a a physical quantity which is independent of any other physical quantities. For example: length, mass, time, etc.

Measurement is defined as the process of comparison of an unknown physical quantity with a known standard quantity at the same time to get accurate findings.

Measurement is the process of comparing an unknown physical quantity with known standard physical quantity or unit.

The Internationally accepeted units of measuring physical quantities is called SI unit of measurement.

Velocity is defined as the rate of change of displacement. Its SI unit is metre per second (m/s).

Measurement is the process of comparing an unknown physical quantity with known standard physical quantity or unit.

The Internationally accepeted units of measuring physical quantities is called SI unit of measurement.

Velocity is defined as the rate of change of displacement. Its SI unit is metre per second (m/s).

Nepal Bureau of Standards and Metrology checks the correctness of the scales and standard weights of the shop on the fixed interval because of the following reasons:

• Only standard weights can be used for measurement. Using non-standard weights is considered illegal.
• Scales and standard weights can be damaged after continuous use and might not give accurate measurement.

Differences between MKS and SI system of units are: