At the end of Nick Cooks Documentary (UFOs secret evidence) he shows a photograph of Contrails from a craft measured travelling across the globe at 8000 mph....not maybe or possibly...Really 8000 mph. Nick is a specialised Black Ops Air Defence journalist so it was no fake or hoax photo....My Question

Is it possible for Humans to travel in a craft at 8000 mph ? What kind of G forces would this exert ?
Thanks

Absolutely, the Shuttle exceeds 17,500 mph. The G-Forces of course depend on the rate of acceleration.

It is possible if you have what is called inertial dampers to cancel out the G's. I think this is correct.

A craft without these would be ripped to shreds (depending on acceleration).