1. Changing Speed: The object's speed is increasing or decreasing. Think of a car speeding up or slowing down.
2. Changing Direction: The object's direction of motion is changing, even if its speed remains constant. Imagine a car turning a corner at a steady speed.
3. Changing Both Speed and Direction: The object's speed and direction are both changing simultaneously. A rollercoaster going up and down a steep hill would be an example.
Important Note: Acceleration is a vector quantity, meaning it has both magnitude (how much) and direction.
