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Simple Fling Puzzle

Not the most thrilling course I made yet, but good enough to show the principles of momentum, and also the auto-aim of the portals when falling.
As long as you have faith, this puzzle should be no problem.
Just in case you fail the jump to the last door, there's a blue gel safety net to catch you, and perhaps allow you to restart in case you screwed up the jump.
Enjoy!