Meriam, Kraige & Bolton — Kinematics of Particles: Problem 2_179

2/179 Under the action of force $P$, the constant acceleration of block $B$ is $6 \text{ ft/sec}^2$ up the incline. For the instant when the velocity of $B$ is $3 \text{ ft/sec}$ up the incline, determine the velocity of $B$ relative to $A$, the acceleration of $B$ relative to $A$, and the absolute velocity of point $C$ of the cable.