The bar OA in the telescope adjusting mechanism shown below…

The bar OA in the telescope adjusting mechanism shown below rotates at a constant angular velocity of ω=3 rad/sec CCW.  All dimensions shown are in mm. The instantaneous center of zero velocity of telescope AB at the instant shown is located at point . The angular velocity of bar AB is rad/sec and the velocity of point B is vB= mm/sec. The angular acceleration of bar AB is rad/sec2 and the acceleration of point B is aB= mm/sec2. Important Note: Please use minus (-) sign for your answers to CW angular velocities and accelerations, and linear velocities and accelerations from right to left. Round your answers to 1 decimal place if fractional. Otherwise, enter their integer values.