Here's the breakdown:
* Constant Speed: This means an object is traveling at the same rate over a period of time. Imagine a car driving down a straight road at 60 mph without speeding up or slowing down. This is constant speed.
* Not Constant Speed: This means the object's speed is changing. This can happen in two ways:
* Speeding Up (Acceleration): The object is going faster and faster. Think of a car taking off from a stoplight or a roller coaster going down a steep hill.
* Slowing Down (Deceleration): The object is going slower and slower. Think of a car coming to a stop at a red light or a ball thrown upwards slowing down as it reaches its peak.
Key Takeaway:
* Constant speed: No acceleration.
* Not constant speed: Acceleration (speeding up or slowing down).
