$(7)$ Member $AB$ is rotating with ${}_{AB}=3ra\frac{d}{s},{}_{AB}=2ra\frac{d}{s^2}$ at this instant.

$($a$)$ Draw the kinematic diagrams of links $AB$ and $BC,$ and the slider block $C.$

$($b$)$ Determine the angular velocity of link $BC,{}_{BC}$ and the velocity of the slider block $C,v_C$ by applying relative velocity equation between points $B$ and $C.$

$($c$)$ Determine the angular acceleration of link $BC,{}_{BC}$ and the velocity of the slider block $C,a_C$ by applying the relative$-$acceleration equation between points $B$ and $C.(7)$ Member $AB$ is rotating with ${}_{AB}=3ra\frac{d}{s},{}_{AB}=2ra\frac{d}{s^2}$ at this instant.

$($a$)$ Draw the kinematic diagrams of links $AB$ and $BC,$ and the slider block $C.$

$($b$)$ Determine the angular velocity of link $BC,{}_{BC}$ and the velocity of the slider block $C,v_C$ by applying relative velocity equation between points $B$ and $C.$

$($c$)$ Determine the angular acceleration of link $BC,{}_{BC}$ and the velocity of the slider block $C,a_C$ by applying the relative$-$acceleration equation between points $B$ and $C.$