Is it possible, for the sake of argument, to launch a payload into an orbit around the earth by putting almost all the energy going at a 90 degree angle? What velocity would it take, and what horizontal orbital burns would you need?
As an orbit goes around the Earth, your challenge if you launch vertically is that once you reach the desired height you will then need to accelerate sideways to orbital velocity. For an L2 orbit, this is around 1km/s with respect to the Earth.
So you need to carry all that fuel up with you, to then burn it. That's a vast amount of mass wasted in the initial launch, so realistically it isn't going to happen.
In reality, the launch profiles used give you orbital velocity and height as efficiently as possible, to maximise payload.
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