eli5: Trajectory of rockets

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Why do rockets curve when leaving earth?

Is it the cause of natural forces or a predetermined path by scientist before launched?

Do most rockets follow a general curve or does it depend on thrust, lift (when rocket is horizontal), height position, etc.?

Is it required or could it theoretically just go straight up assuming infinite fuel?

Thanks in advance!

In: Physics

6 Answers

Anonymous 0 Comments

Because it’s less like [the way we think about it](https://i.imgur.com/LVjQGnU.jpg) and more like [this](https://i.imgur.com/G8Xa4Xt.jpg). I’ll update this comment once I find the actual diagram online; this is just a quick drawing I made. Basically, what this diagram shows is that going straight up will make you go straight down, because gravity is still about 90% up there of what it’s like on the surface. You have to curve so that you wouldn’t fall.

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