1. Change in Speed:
* Speeding up: When an object increases its speed, it is accelerating. This is often referred to as "positive acceleration."
* Slowing down: When an object decreases its speed, it is also accelerating. This is often referred to as "negative acceleration" or "deceleration."
2. Change in Direction:
* Turning: Even if an object maintains a constant speed, changing its direction of motion still constitutes acceleration. This is because acceleration is a vector quantity, meaning it has both magnitude (speed) and direction.
In summary, any change in either speed or direction, or a combination of both, will result in acceleration.
