Constant Velocity:
* No change in speed: You're traveling at the same rate.
* No change in direction: You're moving in a straight line without turning.
Not Constant Velocity:
* Change in speed: You're either speeding up or slowing down.
* Change in direction: You're turning or changing your path.
How to tell:
1. Feel it: If you're accelerating (speeding up or slowing down), you'll feel a force pushing you back or forward in your seat. If you're turning, you'll feel a force pushing you towards the outside of the turn.
2. Observe your surroundings: If things around you seem to be moving relative to you (getting closer or farther away), you're not moving at a constant velocity.
3. Use tools: A speedometer tells you your speed, and a compass or GPS tells you your direction. If either of these are changing, your velocity is not constant.
Examples:
* Constant velocity: Driving down a straight, empty highway at a steady 60 mph.
* Not constant velocity:
* Driving down a highway and pressing on the gas pedal to speed up.
* Driving down a highway and braking to slow down.
* Driving around a curve in the road.
Key takeaway: Constant velocity means no change in speed and no change in direction. Any deviation from this means you're not moving at a constant velocity.
