Skydiving
In my experience not many games have
skydiving but some do like Legend of Zelda Skyward Sword for the
Wii (picture to right).
Just as with swimming we can
![Skydiving in Skyward Sword](images/IMG_1234.JPG)
look to Newton's laws
to explain the physics behind it.
(picture taken by me)
Let's draw a Free Body Diagram of what is
happening in our picture. We have 2 forces acting on our object,
Air Resistance (Drag) and Gravity.
![Drag is less than
Gravity force](images/skydivingFreebody.png)
When the object is first
falling gravity is greater than drag but when the object hits
terminal velocity (maximum falling speed) our diagram changes.
![Drag=Gravity](images/TerminalVFinal.png)
Drag and Gravity
equal each other in magnitude at terminal velocity, which means
the net forces are zero and the object is now falling at a
constant speed.
Further reading
Sum up of Skydiving
What you should take away from all this, is
that 2 forces are acting on your falling object. You have to
take into account your object is accelerating down until it
reaches terminal velocity which is a constant speed where
Drag=Gravity.