Mechanics and properties of Matter .1:1. MEASUREMENTS:
Physics is concerned with measurement of physical quantities and classifying them into groups according to their nature.
To measure is to find the value of a physical quantity using a scientific instrument with a standard scale.
Mechanics and properties of Matter
A physical quantity is a physical property that can accurately be measured.
Types of Physical Quantities
There are two types of Physical Quantities namely;
(i) Fundamental Quantities or Basic Quantities
(ii) Derived Quantities
1:1:1. FUNDAMENTAL QUANTITIES OR BASIC QUANTITIES
These are quantities from which all other quantities are obtained. They are seven in total and these are:
Note: In mechanics, we use only three fundamental quantities; i.e length, mass and time.
Length is the distance between any two points.
It can also be defined as the distance covered by matter. It is a measurement of the extent of something from end to end.
The S.I unit of length is a metre (m).
Other units of length include; Miles, kilometer, Hectometre, Decametre, Decimetre, Centimetre, etc.