Question

Define centripetal acceleration?

Answer 1

Consider an object moving in a circle of radius r with constant angular velocity. The tangential speed is constant, but the direction of the tangential velocity vector changes as the object rotates. Definition: Centripetal Acceleration. Centripetal acceleration is the rate of change of tangential velocity: =

Answer 2

Actually centripetal acceleration is the change in the rate of the tangential velocity.The direction of the centripetal acceleration is always inwards along the radius vector of the circular motion.