1. Changing Magnitude (Speeding Up or Slowing Down)
* A car accelerating from rest: Its speed increases over time, meaning its velocity changes.
* A ball rolling down a hill: Its speed increases due to gravity, leading to a change in velocity.
* A car braking to a stop: Its speed decreases over time, resulting in a change in velocity.
2. Changing Direction (Turning)
* A car turning a corner: Its direction changes even if its speed remains constant.
* A ball thrown in a projectile motion: Its direction continuously changes due to gravity.
* A planet orbiting the sun: Its direction is constantly changing as it travels in an elliptical path.
3. Changing Both Magnitude and Direction
* A rocket taking off: Its speed increases and it changes direction as it ascends.
* A roller coaster going up and down: Its speed changes as it goes up and down, and its direction changes at the turns.
In essence, any object that is not moving in a straight line at a constant speed has non-uniform velocity.