Isn’t going up with velocity greater than 9.81 m/s be enough to escape earth’s gravity?
In: Physics
Let’s do it with a rock first. Just drop it. See how long that took?
Now throw it towards the horizon as hard as you can. See how far it went horizontally and how long it took to fall to the ground?
Now we all know the earth is round. The idea is to throw that rock hard enough and far enough so that it goes past the curve of the earth before it lands. This way it never touches the ground again.
We don’t have the means to accelerate stuff quickly enough to launch into orbit at that flat of an angle and achieve high enough speeds. Air is a problem because at those speeds it causes lots of heat and drag so we have to throw it “over” the air. That’s why orbit needs to be out of the atmosphere to stay in orbit.
My take on it anyway.
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