I have spent the whole day trying to figure out the equations having to do with drag on objects with a fixed mass.
My example which I included is kinda like a classic cannon shooting example(Platform-scrolling).
I have figured out how to implement gravity and convert it to pixels.
(1 meter = 32 pixels)
My problem is drag, and how to implement it.
I found this:
(alot of interesting articles)
This is the formula:
D = .5 * Cd * r * A * Vt^2
D = Drag (Fd)
Cd = Drag Coefficient (Bullet = 0.295)
r(rho) = Gas Density (Air at sea level = 1.225 kg/m3)
A = Cross-sectional area (Circles; A = Pi * r^2)
Vt = Terminal Velocity (m/s^2)
When I calculate this I get a value, I think is is N(Newtons).
Since I am a greeny on physics I almost have no idea of what I am doing.
Please be gentle. <img src="smileys/smiley9.gif" border="0" align="middle" />
So how would I go about inplementing this to the Xpos and Ypos on the bullet. Which updates every 10 milliseconds. (In my example below)
Any help is very very appriciated!
Please explain like I was a 5 year old. <img src="smileys/smiley36.gif" border="0" align="middle" />
According to this:
<font color=blue>Drag or the air resistance decelerates the projectile with a force proportional to the square of the velocity.</font>
Im not sure about this...
Here is my file: