How to get the ball to the middle of the room
1. Turn on all the air vents in the room.
2. When the ball starts to move around the room wait until it’s one ball ahead of the middle vent, then use your force to freeze it.
3. Switch off the vent on the side where the ball is.
4. The ball continues to move inertly, right in front of the centre vent and that will blow it directly into the socket in the middle of the room.