Which component is directly responsible for absorbing energy by deforming during a crash?

Which component is directly responsible for absorbing energy by deforming during a crash?

• A. Seat belts
• B. Airbags
• C. Crumple zone
• D. Tires

Answer: (C)

When a crash happens, the car’s stored energy must be dissipated. The component that absorbs energy by deforming is the crumple zone. It’s designed to collapse in a controlled way, turning kinetic energy into work to crush metal and other materials. This increases the time over which the car decelerates, which lowers the peak force on occupants and helps prevent injuries. Seat belts and airbags play essential roles too—seat belts restrain movement to prevent contact with the interior, and airbags cushion and spread out forces on the body—but they don’t primarily absorb energy by deforming the vehicle structure. Tires deform on impact, but their primary safety function isn’t to absorb crash energy through structural deformation.

When a crash happens, the car’s stored energy must be dissipated. The component that absorbs energy by deforming is the crumple zone. It’s designed to collapse in a controlled way, turning kinetic energy into work to crush metal and other materials. This increases the time over which the car decelerates, which lowers the peak force on occupants and helps prevent injuries.

Seat belts and airbags play essential roles too—seat belts restrain movement to prevent contact with the interior, and airbags cushion and spread out forces on the body—but they don’t primarily absorb energy by deforming the vehicle structure. Tires deform on impact, but their primary safety function isn’t to absorb crash energy through structural deformation.