Acceleration is about change in *velocity*, not just speed.
* Speed is how fast something is moving.
* Velocity is speed *and* direction.
When an object turns left while maintaining the same speed, its *direction* changes. This change in direction means its *velocity* changes, even if its speed remains the same.
Think of it this way:
* Imagine you're driving a car on a straight road at 60 mph. You're going at a constant speed.
* Now, you turn left onto another road, still going 60 mph. Your speed is the same, but your direction has changed.
* Because your velocity (speed *and* direction) has changed, you have experienced acceleration.
In summary:
* Acceleration is a change in velocity, not just speed.
* Turning while maintaining speed changes direction, resulting in a change in velocity.
* Therefore, an object turning while traveling at a constant speed is accelerating.
