The announcer will say that if you are a non employee who has discovered this facility amidst the ruins of civilization, welcome! and remind you that testing is the future, and the future starts with you. Place the crate on the red button and door will open. jump back down to the main area to fetch the crate, and again shoot a portal open at the bottom of the pit and jump to get to the door. Fall through the pit to reach the door area. Next go and stand on top of the deep pit, and shoot open a portal on the bottom of the pit (see screenshot). You will end up in a shallow pit, so open a portal near you to reach the main area. and if the laws of physics no longer apply in the future, then god help you.
As you step out of the elevator, the announcer explains that the next test applies the principles of momentum to movement through portals.
