dennis@home wrote:


"John Williamson" wrote in message
...
The Natural Philosopher wrote:
John Williamson wrote:
dennis@home wrote:


"The Natural Philosopher" wrote in message
100mph is too fast to go through a town center but isnt fast
enough to escape to earth orbit.

That's not true.
its more than enough to escape earth orbit.
Go on argue with me and prove that you have no understanding of
orbits or space travel.

Escape velocity from the Earth is 25,000mph, roughly. Orbital speed
for the Earth at ground level is about 17,500 mph relative to the
centre. At 100mph on a normal road, the reduction in weight is in
theory just about measurable, although in practice totally masked by
aerodynamic effects.

100mph is a *touch* too fast to be driving through a town centre,
though, unless you're in Monaco on Grand Prix day.


Note dennis changes the game from 'to earth orbit' to '[from?] earth
orbit'.

And is still wrong.

Where?
Are you denying physics by saying a rocket with an engine that can run
long enough can't escape the earths gravity at very slow speeds?

No, I'm calling your statement which say that 100mph is fast enough to
escape Earth orbit a lie. Unless, of course, you are talking about an
extra 100 mph for an object that is already travelling at 24914 mph
relaitve to the centre of the Erath.

--
Tciao for Now!

John.