In this note, we are going to know about a topic called “What is Scalar Quantity?” and Examples of Scalar Quantity. Welcome to Poly Notes Hub, a leading destination for engineering notes for diploma and degree engineering students.
Author Name: Arun Paul.
What is Scalar Quantity?
It is a physical quantity with simply magnitude but no direction. Scalars are fully described by a numerical value expressed in the proper units.
Key characteristics of Scalar Quantity
- They do not depend on direction.
- They follow the simple rules of algebra.
- They remain unchanged even if the frame of reference changes.
Examples of Scalar Quantity
Here are the list of scalar quantity examples –
| Scalar Quantity | Value | Unit |
|---|---|---|
| Mass | 5 kg | Kilogram (kg) |
| Time | 10 seconds | Second (s) |
| Speed | 60 km/h | Kilometer per hour (km/h) |
| Temperature | 30°C | Degree Celsius (°C) |
| Energy | 500 Joules | Joule (J) |
| Distance | 200 meters | Meter (m) |
| Volume | 2 liters | Liter (L) |