A doubt from rigid body dynamics

[vijayramakrishnan]

in rigid body dynamics is this relation between velocity of centre of mas and velocity of any particle in the rigid body correct?
v_cm = v_p + rXω

r is the position vector of the particle with respect to centre of mass

relations are written in vector form and also tell me how to calculate direction of ω.

 

[tade]

ω=(v × r) /r^2

 

[vijayramakrishnan]

ω=(v × r) /r^2

what is v here sir?