In this note, we are going to know about a topic called “What is Vector Quantity?” and Examples of Vector Quantity. Welcome to Poly Notes Hub, a leading destination for engineering notes for diploma and degree engineering students.
Author Name: Arun Paul.
What is Vector Quantity?
A vector quantity is a physical quantity with magnitude and direction. Vectors are represented by arrows, with the length representing magnitude and the arrowhead indicating direction.
Key Characteristics of Vector Quantity
- They have both magnitude and direction.
- They follow vector algebra, including addition, subtraction, and cross/dot products.
- They change when either magnitude or direction changes.
Examples of Vector Quantity
Here are the list of Vector Quantity examples –
| Vector Quantity | Example Value | Unit | Direction |
|---|---|---|---|
| Displacement | 5 km | Kilometer (km) | East |
| Velocity | 50 km/h | Kilometer per hour (km/h) | North |
| Acceleration | 9.8 m/s² | Meter per second squared (m/s²) | Downward |
| Force | 10 N | Newton (N) | Right |
| Momentum | 20 kg·m/s | Kilogram meter per second (kg·m/s) | Upward |
| Torque | 15 Nm | Newton meter (Nm) | Clockwise |