[Hutch]

I meant experimenting to find the coeffecients... Anyhow, it depends on how you design your mechanism - I know we are trying to come up with something that will give predictable spin for example. Air resistance is probably more important than spin though and would be something to consider if you have anyone on your team who can run the numbers.

Btw, now that you have the links to the projectile motion equations, would you still like me to solve those equations or do you have what you need?