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Deaths in car racing fell sharply when rigid frames were replaced by parts that:
ACrumple
BStiffen
CShine
DFloat
Answer & Solution
Correct answer: A. Crumple
1. Crumpling lengthens the collision time.
2. So the force on the car is less.
3. Deaths decreased dramatically.
_Source: OpenStax College Physics for AP Courses 2e, Chapter 8, Linear Momentum and Collisions (CC BY 4.0)._
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