system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:how high would an ant need to jump from to die on impact?
gpt
Height fast becomes meaningless as the ant would quickly reach terminal velocity (where the pull from gravity matches the air resistance and you don't fall any faster) so whether you push it off a table or out of a plane it will hit the ground at the same velocity. Ants are very light compared to their body size so they fall very slowly (edit: with a very slow terminal velocity that is).

That combined with their very tough but deformable body means that they will not die on impact as they do not have that much energy to absorb as a result of falling slowly, and the energy can easily be absorbed and spread about by its body. Just to further make them tougher they also have a nervous system and circulatory system that is distributed throughout their body so an impact to the head is less likely to be fatal compared to that on a human. 

Many other small animals are able to survive a drop from large heights because they have a low terminal velocity.