Simple educaional game (physics)

I need a simple educational flash game/acctivity. The topic is first Newton's law. Its purpose is to help children to understand the law. The player will hit a ball with a pinball style spring. The force will be adjustable. The player will be able to change the characteristics of the environment: Vacuum vs. atmosferic preassure, gravity vs. zero gravity, the weight of the ball. After the player sets the characteristics he launches the spring. The ball goes certain distance according to the characteristics. Zero gravity and vacuum means it will never stop, so the player must be shown and told that after seeing the ball travel in a constant speed for a while. Setting the atmosferic preassure on will make the ball slow down and eventually stop. Turning the gravity on will make the ball slow down and stop much faster. When the gravity is on a surfice appears. The ball will travel on it. Turning the gravity and atmosferic preassure on at the same time will make the ball stop even faster. Making the ball heavier will make it go slower and shorter distance. The player will see what distance the ball travelled. It will be infinite when there is no atmosferic preassure and gravity and the shortest when there is gravity, atmospheric preassure and the weight of the ball is the highest possible. The player will be alble to set the weight of the ball from 1g to 1000g. The weight of the ball has no effect if there is vacuum and no gravity. Which is obvious as all written above. It's just basic physics. As well as the fact that the ball must travel for example twice the distance when it is 1000g than when it is 500g. The player sets the characteristics before he launches the ball. The spring hits the ball from left and the ball travels from the left to the right. I am not familiar with programming at all. So I will put it very simply. I want this game to be placed on my website and I want to have access to the complete code so I can get other programmers to change it whenever I need it and you are not available. I don't know if it can be even done otherwise, but I'm just making sure.