You can execute this in the devtools console:

data.whiteBall.v.x = 5; data.whiteBall.v.y = 5;

data.blackBall.v.y = 5; data.blackBall.v.x = 5;

Wow! Careful Icarus, going too fast makes it go kind of wild and started freezing the site :P

data.whiteBall.v.x = data.whiteBall.v.y = data.blackBall.v.y = data.blackBall.v.x = 10;

Also frameRate() with 120 or higher will make it go a bit faster. But it seems like there is a limit. I'm not familiar with p5.