>>10910312What do you understand? Dynamic viscosity is the ratio of sheer stress in a fluid to its velocity gradient. This means it has units of Pa/((m/s)/m)=Pa*s=kg*m/s for dynamic viscosity. Divide dynamic viscosity by the fluid's density to get kinematic viscosity. So Pa*s/(kg/m^3)=m^2/s, which is the units of kinematic viscosity.