Referring to Lagrangian methods if potential energy of gravity is considered as positive energy, then kinetic energy should be considered negative.
Recent publications on frame dragging could suggest that kinetic energy resides in a field closely associated with space occupied by a fast moving object.
In other threads I have encouraged a discussion of possible kinetic energy field as recommended by Albert Einstein in 1949 Autobiographical Notes.
Thorne and Morris require negative energy to stabilize a wormhole, which I have proposed as kinetic energy in other threads.
Does Kinetic Energy Qualify As Negative Energy In The Wormhole Of Kip Thorne And Mike Morris?