MHB What is the angular velocity of a hinged pole as a truck accelerates?

[chunky]

The uniform 3.6 m pole is hinged to the truck bed and released from the vertical position as the truck starts from rest with an acceleration of 0.90 m/s2. If the acceleration remains constant during the motion of the pole, calculate the angular velocity of the pole as it reaches the horizontal position.

I believe I know this question however I wanted to be sure

 

[Ackbach]

Please go ahead and post your solution so far, then.

 

[chunky]

Never mind my solution was wrong although I think that using the equations

Vr=0
Vtheta=r*Theta
Ar=-r*Theta(dot)^2
Atheta=r*Theta(double dot)

However i am unsure as to how to add the trucks acceleration into the solution.