Mass is a ____________ physical quantity.

Answer

To solve the question "Mass is a ____________ physical quantity," we can follow these steps:

### Step 1: Understand the Types of Physical Quantities
Physical quantities can be classified into two main categories: fundamental quantities and derived quantities.

### Step 2: Define Fundamental Quantities
Fundamental quantities are those that cannot be defined in terms of other quantities. They are the basic building blocks of measurement. Examples include:
- Mass
- Length
- Time
- Electric current
- Temperature
- Amount of substance
- Luminous intensity

### Step 3: Identify Mass as a Fundamental Quantity
Among these fundamental quantities, mass is one of them. It is a basic physical quantity that is not derived from any other quantity.

### Step 4: Define Derived Quantities
Derived quantities are those that are derived from the fundamental quantities. For example, density is a derived quantity calculated as mass divided by volume.

### Step 5: Fill in the Blank
Since mass is a fundamental physical quantity, we can fill in the blank in the question.

### Final Answer
Mass is a **fundamental** physical quantity.

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