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magicfountain
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Homework Statement
I'm trying to find the function, that describes the velocity approaching to a terminal velocity.
Homework Equations
[itex]F_{net}=mg-\frac{1}{2}\rho v^2 AC_d[/itex]
The Attempt at a Solution
[itex]F=ma[/itex]
[itex]a=F/m[/itex]
[itex]\dot{v}=F/m=g-\frac{1}{2m}\rho v^2 AC_d[/itex]
[itex]\dot{v}=g-kv^2[/itex]
[itex]\dot{v}+kv^2=g[/itex]
(k and g are constants)
I have very few knowledge of DEs and it seems hard to guess a solution.
Can somebody help me?
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