Jolly Roger <
jolly...@pobox.com> wrote:
> On 2016-04-15, Bob <rgs...@notme.invalid> wrote:
> > Hello,
> >
> > Was wondering about this.
> >
> > Re Newton's famous Cannon experiment:
> >
> > With a moderate muzzle velocity, the ball falls to earth.
> > I am fairly sure that the path it takes is parabolic.
> > True ?
> >
> > With the correct additional velocity, the ball has enough velocity
> > to be able to circle the earth and return.
> > Assuming it just "kisses" the surface, I believe it (then) follows a
> > circular orbit as it goes around and around.
> > True ?
> >
> > But again, the initial trajectory would still be parabolic, wouldn't it ?
> > True ?
> >
> > At what point does it change, therefore, from a parabolic to the
> > circular orbit ?
>
> This is rec.media.players.portable.ipod.
Confused people... :-D