$A$ body is revolving with a uniform speed '$v$' in a circle of radius '$r$'. The tangential acceleration is:

If a particle is moving on a circular path with constant speed,then the angle between the direction of acceleration and its position vector w.r.t. the centre of the circle will be ............

$A$ particle moves in a circle of radius $5 \; cm$ with constant speed and time period $0.2 \pi \; sec$. The acceleration of the particle is .... $m/sec^2$.

An athlete runs along a circular track of diameter $80 \ m$. The distance travelled and the magnitude of displacement of the athlete when he covers $3/4$th of the circle is (in $m$):

If a body is moving in a circle of radius $r$ with a constant speed $v$,its angular velocity is:

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