The differrent between suborbital and orbital.

Imagine getting a ride on a suborbital rocket the booster will run for a bit then after the engine shut down it coasts up above the karman line or 100 kilometers but once it get to its peak or apogee it will stop and then fall back to the Earth. So how do you stay in space ? Now let's pretend you climed a ladder to space then let's throw a ball at 30 meters per second it'll fly side ways but mostly ended up just falling back down it's trajectory makes on orbit around the center of the Earth it just runs into the earth first and its lowest point or perigee is barely beyond the earth's center, and let's shoot a pistol at 350 meters per second and a sniper rifle at 1400 meters the sniper bullet fly alot further but gravity still pulls the bullet down so they'll hit the atmosphere and eventually the ground. In order to stay in space we need to reach a velocity of roughly 7500 meters per second so our arc goes beyond the horizon and misses the atmosphere and the earth no gun will get anything that fast and instead of doing it all in one instant a rocket will continually accelerate for about eight minutes and since it gets above most of the atmosphere that would slow down and it'll stay there for a very long time orbiting.