Projectile motion with air resistance

[denham]

Hey guys, I am in the process of writing a program for pmotion with air resistance that is proportional to the velocity squared and I've hit a stump. In my program it simulates the path of the ball by changing the time and putting it into the equation and plotting it on a graph. My problem is all the equations i have found using air resistance has mass. I know this question is not 100% physics but if anyone could help It would be greatly appreciated

The program allows only the input of the horizontal velocity component and the vertical velocity component

Thanks

 

[K^2]

You have F_d=-kv², and you have ƩF=ma. All that really affects the motion here is the ratio k/m. Call it some constant c=k/m, and then you don't have to worry about the mass.

By the way, in 1D, you can solve for v(t) directly.