Using seat belts reduces car crash fatalities by 85%. How can this be explained based on the phenomenon of inertia?

If the passenger is inside the car and is not wearing a seat belt, then in the event of an accident, when the vehicle is suddenly braked or collided with an obstacle, the passenger continues to move horizontally in the direction of the vehicle. Passengers in the rear can, as a result of this inertial movement, hit hard against the front row seats or be thrown onto the road through the windshield. Passenger. sitting in front, and the driver may hit the front panel of the car or also be thrown out of the car onto the roadway. The use of seat belts limits the inertial movement of a person inside the vehicle in the event of a sudden decrease in vehicle speed. Therefore, the use of seat belts reduces fatalities in a car accident.