Is it possible to have a relativistic depropulsion system to decelerate to zero?

Question

If you can't bring Muhammad to the mountain then bring the mountain to Muhammad.

If, in a stream of flowing water there are two objects flowing in the stream, one object being ahead of the other by a distance X and the object ahead becomes lodged, being stationary relative to the flow of the stream, does not the following object moving unhindered with the flow close the distance X by the speed of the stream?

How fast does the Galaxcy Milky Way move in the stream?

If I was in a UFO seemingly in Earth's atmosphere maintaining a fixed position, hovering, and was being approached by U.S.A.F. interceptors, and to evade interception immediately negated the Earth's gravity freeing me of the rotational axial spin of the Earth how would that appear to the pilots in the interceptors, that the UFO was moving at a fantastic rate of speed because the interceptors are moving at approximately 17,000mpg?

Yes, you have been instructed. Am not talking to the posters. If you want interstellar capability that is the way to go, not a bottle rocket.

Hello, Colin: Yes, and that leaf is moving at over one million mph.

Answer 1

Is it possible to have a relativistic depropulsion system to decelerate to zero?
yep of course it is called a break

How fast does the Galaxcy Milky Way move in the stream?
the speed of a floating leaf
(a very fast leaf m8 hehe)

If I was in a UFO seemingly in Earth's atmosphere maintaining a fixed position, hovering, and was being approached by U.S.A.F. interceptors, and to evade interception immediately negated the Earth's gravity freeing me of the rotational axial spin of the Earth how would that appear to the pilots in the interceptors, that the UFO was moving at a fantastic rate of speed because the interceptors are moving at approximately 17,000mpg?
yes!

a question of my own how long doid it take you to type this?

Answer 2

since there is no way to determine which objects are moving and which are standing still, or how fast they are moving. desceleration in respect to another stellar object, would be exactly the same as accelleration in the oposite direction.

so the answer is yes, its called accelleration.