Velocity
Velocity
🌟 Introduction to Velocity
Imagine two cars both moving at 60 km/h – one going north, the other south. Are they really moving the same way? This is where velocity comes in! Unlike speed, velocity cares about direction. Let’s discover why velocity is speed’s smarter cousin! 🚗🧭
📸 Velocity Illustration
📚 Key Concepts on Velocity
🔹 What is Velocity?
Definition: Velocity is the displacement of an object per unit time.
Velocity is a vector quantity – it has both magnitude and direction. It tells us not just how fast something is moving, but also in which direction.
🔹 Uniform & Non-uniform Velocity
- Uniform Velocity: When an object covers equal displacements in equal intervals of time
- Non-uniform Velocity: When an object covers unequal displacements in equal intervals of time
🔹 Difference between Speed & Velocity
| Speed | Velocity |
|---|---|
| Scalar quantity | Vector quantity |
| Distance / Time | Displacement / Time |
| Always positive | Can be positive, negative, or zero |
| Direction not important | Direction is important |
Real-life Example: A car going around a circular track at constant speed has changing velocity because its direction keeps changing!
Velocity Formulas
🧠 Important Formulas
- Velocity = Displacement / Time
- Average Velocity = Total Displacement / Total Time
- Displacement = Velocity × Time