According to the notes, the Akins incident 24-2 illustrates what about plastic shatters?

According to the notes, the Akins incident 24-2 illustrates what about plastic shatters?

• A. Plastic shatters dissipating energy = safe head
• B. Plastic shatters cause head injury
• C. Plastic shatters are irrelevant
• D. Plastic shatters increase vibration

Answer: (A)

Energy dissipation through plastic shatters reduces the peak force reaching the head during impact. In the Akins incident 24-2, the plastic components broke in a way that absorbed part of the impact energy, so less energy was transmitted to the skull, making the outcome safer. This shows why certain plastic failures can be protective: they act as energy absorbers rather than transmitting the full hit to the head. The other ideas don’t fit because if shattering caused head injury, energy wouldn’t be absorbed; calling it irrelevant ignores the observed protective effect; and saying it increases vibration contradicts the idea of energy absorption dampening the impact.

Energy dissipation through plastic shatters reduces the peak force reaching the head during impact. In the Akins incident 24-2, the plastic components broke in a way that absorbed part of the impact energy, so less energy was transmitted to the skull, making the outcome safer. This shows why certain plastic failures can be protective: they act as energy absorbers rather than transmitting the full hit to the head. The other ideas don’t fit because if shattering caused head injury, energy wouldn’t be absorbed; calling it irrelevant ignores the observed protective effect; and saying it increases vibration contradicts the idea of energy absorption dampening the impact.