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It's slightly more complex than that. If the helmet cracked then the force of the collision was transferred to your skull. Admittedly cracking the helmet would
by awjr 13y ago
It's slightly more complex than that. If the helmet cracked then the force of the collision was transferred to your skull. Admittedly cracking the helmet would have taken some force out of the collision, but the moment it cracked it became useless.
- vacri 13y agoThis is why you throw away a 'used' helmet. It is the process of cracking - or even merely deforming - that is the protective act. That it's useless after cracking doesn't mean it hasn't done it's job. It's like saying the crumple zone of a car is useless because it crumpled in the accident.
- dasil003 13y ago> If the helmet cracked then the force of the collision was transferred to your skull. This does not make any sense at all. Your skull absorbs some force in all cases. The exact mechanics of what happens are definitely complex, but compressed and cracked polystyrene is still better than hitting your head directly on concrete, just as hitting your head on asphalt is. That is of course leaving aside the question of how much force was absorbed before it cracked and what was left afterwards, but in all cases it's not a binary assertion.