If you take a high power rifle and fire a bullet horizontally down range, the bullet will travel a distance and eventually hit the ground. The time it takes for the bullet trajectory to fall to the ground, (no matter how powerful the rifle) is the same time it takes for the bullet to just fall to the ground without being fired from the gun. There are no aerodynamics on the projectile to keep it aloft.
-
Re: it's gravity,
Sun, October 7, 2007 - 8:26 AMalso, one way to think of achiving orbit around the planet is the projectile having an inertia in the plane of the earth's surface equal to the rate of fall.
