Physical Quantities

Physical Quantities

1. A physical quantity is a quantity that can be measured.
2. A physical quantity can be divided into base quantity and derived quantity.

Base Quantities

1. Base quantities are the quantities that cannot be defined in term of other physical quantity.
2. The 5 base quantities and its units are as in the table below:
1. Take note that, the unit of temperature is Kelvin but not Celsius.

Derived Quantities

1. A derived quantity is a Physics quantity that is not a base quantity. It is the quantities which derived from the base quantities through multiplying and/or dividing them.
2. For example, speed is defined as the rate of change of distance, Mathematically, we write this as Speed = Distance/Time. Both distance and time are base quantities, whereas speed is a derived quantity as it is derived from distance and time through division.

Example