foolsgold
Bluelighter
as it says your in box is full hun
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kate clean your box out :)
- Thread starter foolsgold
- Start date
Don Luigi
Bluelight Crew
Anybody wanna talk about the Oberth effect?
warriorOnTheEdge
Bluelighter
Its like parabolic and stuff
StoneHappyMonday
Bluelighter
- Joined
- May 10, 2001
- Messages
- 18,084
The mechanical work can be defined as
\Delta E_k = F \cdot s
where E_k is the kinetic energy, F is the force (the thrust of the rocket which is considered constant), and s is the distance. Differentiating with respect to time, we obtain
\frac{\operatorname{d}E_k}{\operatorname{d}t} = F \cdot \frac{\operatorname{d}s}{\operatorname{d}t}
or
\frac{\operatorname{d}E_k}{\operatorname{d}t} = F \cdot v
where v is the velocity. Dividing by the instantaneous mass m to express this in terms of specific energy (e_k), we get
\frac{\operatorname{d}e_k}{\operatorname{d}t} = \frac F m \cdot v = a \cdot v
where a is the acceleration vector.
No not really.
\Delta E_k = F \cdot s
where E_k is the kinetic energy, F is the force (the thrust of the rocket which is considered constant), and s is the distance. Differentiating with respect to time, we obtain
\frac{\operatorname{d}E_k}{\operatorname{d}t} = F \cdot \frac{\operatorname{d}s}{\operatorname{d}t}
or
\frac{\operatorname{d}E_k}{\operatorname{d}t} = F \cdot v
where v is the velocity. Dividing by the instantaneous mass m to express this in terms of specific energy (e_k), we get
\frac{\operatorname{d}e_k}{\operatorname{d}t} = \frac F m \cdot v = a \cdot v
where a is the acceleration vector.
No not really.
Don Luigi
Bluelight Crew
They couldn't have sent me Shambles?
felix
Bluelight Crew
Aye kate, clean yer box out, it smells like a wheeliebin out the back of a fish shop.
OBVIOUS JOKE
:D
OBVIOUS JOKE
:D
foolsgold
Bluelighter
hahaha 
felix fuck fuck sake lol
felix fuck fuck sake lol
foolsgold
Bluelighter
warriorOnTheEdge
Bluelighter
A purple om!%)