Block is sliding along a horizontal surface at 3.4 m/s when it begins to slide up a 20 degree incline and collided with Block B halfway up the ramp. Block B has equal mass and is released from a height of H and slides down the ramp until it collides with Block A at height 1/2 H. The two blocks stick together after colliding. All surfaces have negligible friction.

Find the velocity of the Block A-B system after the collision. Assume down the ramp is negative and acceleration due to gravity is 10 m/s^2