Problem $11\mathrm{.}059-$ Relative motion of the blocks

The system shown starts from rest, and each component moves with a constant acceleration. The relative acceleration of

block $C$ with respect to collar $B$ is $60m\frac{m}{s^2}$ upward and the relative acceleration of block $D$ with respect to block $A$ is

$110m\frac{m}{s^2}$ downward.

Determine the velocity of block $C$ after $2$ s $.$

The velocity of block $C$ after $2$ s is

Determine the change in position of block $D$ after $3$ s $.$

The change in position of block $D$ after $3smm.$uarr