system
Given the following post, respond as if you're commenting on Reddit:
human
Is there a difference between hitting a concrete wall at 100mph and being hit by a concrete wall at 100mph?
gpt
In an idealised case no. In reality there will be small differences due to things which aren't really mentioned in your question.

For instance if you drive into a wall at 100mph the fact that your wheels are spinning (for example) makes the situation different from if the wall is launched towards the car at 100mph.