* Acceleration is a vector quantity, meaning it has both magnitude (how much) and direction.
* Positive acceleration indicates that the object is increasing its speed in the direction of the acceleration.
* Negative acceleration indicates that the object is either:
* Decreasing its speed in the direction of the original motion (often called "deceleration" or "slowing down")
* Increasing its speed in the *opposite* direction of the original motion.
Think of it this way:
Imagine a car moving to the right.
* Positive acceleration means the car is speeding up to the right.
* Negative acceleration means the car is either slowing down to the right or speeding up to the left.
Therefore, if an object is speeding up, its acceleration must be in the same direction as its velocity (positive or negative depending on the chosen reference frame).
Let me know if you'd like more examples or explanations!
