When a body moves with a constant speed along a circle

When a body moves with constant speed v along a circle, it has a centripetal acceleration but no linear acceleration. The centripetal force F acting on the body is at right angle to the displacement s. Since, $$ \begin{aligned} W & =F \cdot s=F s \cos \theta \\ & =0 \quad\left(\because \cos 90^{\circ}=0\right) \end{aligned} $$ Hence, no work is done on it.