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;
data.whiteBall.v.x = 5; data.whiteBall.v.y = 5;
data.blackBall.v.y = 5; data.blackBall.v.x = 5;
data.whiteBall.v.x = data.whiteBall.v.y = data.blackBall.v.y = data.blackBall.v.x = 10;