In ENT episode “Divergence” parts go flying off the ship during warp 5. What would happen to something at that speed without the protection of the field? Would it stay in high speed motion until interacted upon by something else (meteoroids/dust/gravitational fields)? Or would it disintegrate under this kind of speed?
The question is “stupid” as warp as described by Star Trek is somewhat unphysical.
Warp drives work by bending space and hence shortening the distance (in “meters”) between you and your destination. Hence you can fly at a leisurely pace to get there. It is very much unclear how the space around objects changes. If they do not evade they would change “shape” as they approach your warp bubble. When they are inside I would expect you to collide at your leisurely pace, not effective warp speed.
Similar to warp fields in fiction gravitational waves do this space bending in real life. But their amplitudes are extremely small (10^-21).