The

pulls in the cable with an acceleration aC$=(3$t$2)$m$/$s$2$

$,$ where t

is in seconds. The motor at D

draws in its cable at aD$=5$m$/$s$2$

$.$ Both motors start at the same instant from rest when d$=3$m

$.($Figure $1)$Determine the time needed for d Determine the velocity of block A

relative to block B