In uniform circular motion,the velocity vector and acceleration vector are

The acceleration vector of a particle in uniform circular motion averaged over one complete cycle is a null vector. This statement is:

$A$ particle is moving on a circular path with constant speed $v$. It moves between two points $A$ and $B$,which subtend an angle $60^{\circ}$ at the centre of the circle. The magnitude of the change in its velocity and the change in the magnitude of its velocity during motion from $A$ to $B$ are respectively ..........

$A$ motorcyclist going around a circular track at a constant speed has:

$A$ particle is moving in a circle of radius $r$ with center at $O$,with a constant speed $v$. The magnitude of the change in velocity when moving from point $A$ to point $B$ is

For a particle moving in a circle with a constant angular velocity,which of the following statements is incorrect?