What is the effect of speed on the severity of a crash?
Answer and explanation
Correct answer: C. Higher speed means more energy and more severe injury
- Step 1: Kinetic energy grows with the square of speed, so crashes at high speed are far more dangerous.
- Step 2: Seat belts reduce the harm.
Answer
Higher speed means more energy and more severe injury.
Why not the others: Speed has no influence on the severity of injuries, higher speed gives the airbag more time to inflate and a lower speed increases the energy of the crash don't fit.
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