1. A Car on a Circular Track:
* Constant Speed: The car might travel at a steady 60 mph.
* Non-Constant Velocity: Even though the speed is constant, the car's direction is constantly changing as it goes around the curve. Velocity is a vector quantity, meaning it has both magnitude (speed) and direction.
2. A Satellite in a Circular Orbit:
* Constant Speed: The satellite might orbit the Earth at a constant 17,500 mph.
* Non-Constant Velocity: The satellite's direction is always changing as it follows its circular path around the Earth.
3. A Ball on a String in a Horizontal Circle:
* Constant Speed: You can swing the ball at a consistent speed.
* Non-Constant Velocity: The ball's direction is constantly changing as it moves in a circle.
Key Point: Velocity is a vector quantity, meaning it has both magnitude (speed) and direction. If either the speed or the direction of an object changes, its velocity changes.
Let me know if you'd like more examples!