please answer this question with clear physics diagram and using vector sign.

1 . A bullet is fired at a block of wood; the bullet embeds itself inside. A light rod of length l = 50.0 cm is attached at one end to a frictionless hinge and to the wooden block of mass M = 10.0 kg at the other end. The rod can swing freely in a vertical plane. The bullet m = 30.0 g is fired horizontally at the block. The rod swings up from the initial vertical position to a maximum angle' = 20.0 deg. a. (05 points) Draw a clear physics diagram. Use a straight edge and a compass. b. (15 points) Find the initial velocity of the bullet. (Continue calculations on reverse.)