Yes, I should have mentioned...I did set up the door as an active rigid body. Also, the ball is as well. The ball already spins in a bowl and lands in a tube which shoots it out to hit the top of the...

URGENT - !
I want the ball to hit the door as it comes out of the tube, so that the door falls over, but the ball is passing right through the door as if the door is transparent. HELP! I'm going...