Modern vehicles are designed to crush when they crash to absorb kinetic energy.

• A. True
• B. False
• C. They don’t
• D. They explode

Answer: (A)

The idea being tested is that car bodies are built to deform in a crash in order to absorb energy. When a vehicle crashes, its kinetic energy has to go somewhere. By designing crumple zones that fold and buckle, the car converts that energy into deformation work and heat, rather than transferring it all to the occupants. This deformation happens over a longer distance and a longer time, which lowers the peak deceleration forces on passengers. Since force equals mass times acceleration, reducing how quickly the car stops means smaller forces on passengers, helping to prevent injuries. In short, controlled crumpling lengthens stopping time and distance, making the crash less violent for those inside. The other statements aren’t accurate: cars aren’t designed to explode in crashes, and they are indeed designed to crush in a controlled way to absorb energy.