Final answer:
The subject in question refers to airbags, which are safety features in vehicles that work in conjunction with seat belts to protect against head and chest injuries by using the physics concept of impulse to reduce the force on passengers in a crash.
Step-by-step explanation:
Works with safety belts and protects against head and chest injuries is likely referring to airbags. Airbags are designed to deploy upon impact in order to minimize serious injuries to passengers. They are an essential safety feature in vehicles that complement the function of seat belts.
When there is a sudden stop, airbags help to extend the time over which the force acts, resulting in a lower net force on the passengers. The concept of impulse in physics explains how increasing the duration (Δt) while the momentum change (Δp) stays the same, will decrease the net force (Fnet). This principle helps to protect bones and organs from the high forces that can occur in collisions.
Additional safety equipment, such as safety helmets, is crucial in various activities like construction, biking, and skating to prevent head injuries. Likewise, the wearing of safety goggles, hearing protectors, and following safe practices contribute to injury prevention and ensuring individual safety.