Ball moves
Here's one that has a slider that controls the velocity of the ball as it moves across the screen.
http://hedberg.ccnysites.cuny.edu/sims/examples/james/ballmoves/
Here's one that has a slider that controls the velocity of the ball as it moves across the screen.
http://hedberg.ccnysites.cuny.edu/sims/examples/james/ballmoves/