Here's why:
* Velocity is a vector: Velocity has both magnitude (speed) and direction. Even though the object's speed is constant, its direction is constantly changing as it moves in a circle.
* Acceleration is the rate of change of velocity: Since the object's velocity is changing (due to the changing direction), it experiences acceleration.
* Centripetal acceleration: The acceleration is always directed towards the center of the circle because it's what keeps the object moving in a circular path instead of continuing in a straight line.
Think of it like this:
Imagine you're swinging a ball on a string. The string is constantly pulling the ball inwards, causing it to move in a circle. This inward pull is the force that causes the centripetal acceleration.
Key Points:
* Centripetal acceleration is always perpendicular to the object's velocity.
* The magnitude of centripetal acceleration depends on the object's speed and the radius of the circular path.
