Centripetal acceleration is the acceleration of an object moving in a circular path, which is directed towards the centre of the circle. It is caused by the change in direction of the object's velocity, which is constantly changing as the object moves along the circular path. The centripetal acceleration is given by the formula a = v^2/r, where a is the acceleration, v is the speed of the object, and r is the radius of the circular path.
The direction of centripetal acceleration is always towards the centre of the circular path, regardless of the direction of the object's velocity. This is because the change in direction of the object's velocity is always towards the centre of the circle, regardless of the direction from which the object is moving.
