Graphing Trajectory with Drag using Program

[Urban_Monkey]

Homework Statement

​

mass = 100 Kg
Cross Area = 4
Drag = .4
Initial velocity = 17.59 m/s
Gravity = 9.81
Angle Changes according to the position of the mouse
Terminal velocity = 31.649 ; Don't know if its relevant but I calculated this

Homework Equations

​

Y1 := X*tan(ang)-9.81*(X^2)/(2*((Vel*cos(ang))^2)) ; This is the equation without drag

The Attempt at a Solution

​

I have looked up everywhere for Drag equations, but I can't find an equation

That solves for the height Y at intervals of X
That has all the variables I have anything not listed isn't relevant or shouldn't be
Everything is constant


If there is anybody able to help me I will be forever grateful
I have been working on this for months, trying to figure this out, and have wondered why is wasn't working when finally found out there's drag in a simple game which turned out not to be so simple.

If there is anything that I can help with I will most gladly try and help.

Thank you for your time I really appreciate it.

 

[BvU]

http://en.wikipedia.org/wiki/Drag_(physics)