i was pretty excited this week. a new game that i have been wanting for a while has finally come out. it is called "portal" and the basic gist of the game is that you have this gun that can shoot portals which you use to solve a series of puzzles. the interesting thing is that whatever you do going into the portal is exactly what you are doing when you come out of the portal. for example, if you shoot a portal on the ground and another some where else, then jump into the portal, you will come flying out the other portal with the same speed and velocity as you did jumping into it. your velocity remains constant but the effects of gravity change on you as you enter and leave the portal. one moment gravity is pulling you down and the next it is pulling you from a different angle. watch the video to see what i mean.



see what i mean? isnt it cool?
anyways, when jumping into the portal from an elevated height your acceleration is (or should be) around 9.8 m/s2, which is your speed when exiting the portal. terminal velocity can be reached when two portals are placed one over another then falling in an infinite loop of portals at which point air resistance will slow you down to a speed slower than 9.8 m/s2.

i could go into the quantum physics involved with this whole portal thing, but im pretty sure my head would explode from over thinking.