2010-04-24 09:10:02 +0000 #1
? Why did not I have a little effect in practice ah
2010-04-24 09:16:51 +0000 #2
pull the ball point is friction, not hitting, see Wang Hao of the video, another is not a stick of gum?
2010-04-24 09:33:59 +0000 #3
What do you mean? Is the ball to each other on stage, it can go back and forth their own. It can only slice or chop, so the ball spins, the friction can be achieved with tables in effect.
