Hyper-accelerated race of aliens goes to the Voyager starship. They are moving at 6,000x the speed of humans. They force the door on the bridge to open. The bridge door just opens and they start walking around. However, were the bridge door to be opened at their speed (assuming a natural speed of door opening was 1/4mph) then it would have been moving at 1500mph, which would have destroyed the door and because of the door's mass, likely 1/2 the bridge deck. Of course, that didn't happen.