The size of the board and the weight dropping could launch something as high as that.
But as it was said, the fellows knees would buckle easy.
And any miscalculation would send him flying in an un-predictable location. Not straight up.
Besides, the attempt to localize yourself (perfectly) under an earth pounding machine is just foolish.
It can fall at an unpredictable location… besides, don’t those machines generally move as they are packing down earth?
Rather silly video, when I saw him launch I knew it was fake, it looked to animated or “Added” if you will.
As for Tobesters claim the sign is fake. I would not be shocked if it was a real sign. For more desolate places in the world looking to develop, they need to cut costs any way possible, and seeing as they had a so called “Ranger Tower” there, it would not be a shocker if a paper sign was posted up. Besides, it rather obvious that there is construction… tho it is many meters (or even a KM or 2) away.
But if they can fake something like this, then I am sure they are able to put background footage in front of real footage, thus to make the sign look real.
Really for this to work, it would have to be a flexible board quite long. The flex would absorb most of the shock, the end result would not look as spectacular (at first), but it would send someone quite high without damaging their legs. The direction of going straight up tho, I don’t see that happening.