system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] Trying to figure out the limits of Borg adaptation...

In First Contact, Picard manages to off a few Borg using fake bullets on the holodeck.  For some reason this seems to work better than phasers.  Whatever. In any event, someone on this sub once stated that the Borg would eventually adapt - even if the bullets were real.  This leads me to my real question.

Let's say that you have an army of advancing borg, and a thousand or so heavy things (tanks, 18-wheelers, filled shipping containers, etc.).  You also have Hulk standing there, mindlessly flinging heavy shit at the Borg incessantly.  Will the Borg ever adapt or does this strategy always work?
gpt
The Borg were not expecting to be hit with a kinetic projectile based weapon in an era when energy weapons are almost exclusively used. Given time the Borg could implement kinetic shielding to slow/stop bullets or other projectiles. 

Adaptations are usually give and take situations so it would be possible that defending against kinetic based attacks weakens them to energy weapons. Given enough force or power you could still defeat them. The effectiveness of Borg defenses against kinetic damage will likely come down to how much energy they can put towards defense vs how much we can put into offense. 

The Borg also require that their organic parts remain functional to hold the augmented cyborg parts in place. While the organic parts of the body are enhanced they are not impervious to damage. If you can destroy the organic parts you can destroy the Borg. This may be capable with extreme heat, biological agents, chemicals, nuclear warheads.