When we see the
Enterprise-D saucer crashing in
Star Trek: Generations or
Voyager crashing in VOY: "Timeless" they move much more like present-day aircraft than we might expect. Partly this is due to "reality would look unrealistic" – people are used to seeing what aircraft look like when they land/crash, but not giant spacecraft many times the size and mass of today's largest ocean-going vessels. The
Enterprise-D saucer is over
five times the length of a Boeing 747 which means her glide speed just before she hits the ground is terrifyingly high (something like 800km/h-1,000km/h) – and assuming she's the same density as
Voyager she weighs an eye-watering
4 million tons:
Voyager's larger than a
Nimitz-class aircraft carrier and weighs 700,000 tons, and yet it skids across that glacier like a Cessna overshooting a runway:
To be blunt, there's no way these ships
could move this way if they weren't subspace-fielding/inertial-damping to shit and negating a lot of their momentum/inertia – and certainly there's no way there'd have been any survivors from the
Enterprise-D crash. So we've already seen evidence that these massive spacecraft
can move like comparatively small aircraft under certain circumstances, and do tremendous force negation even when they're under extreme duress.