Why is it necessary to fasten seat belts when driving a car?

this is necessary so that during sudden braking of the car the human body does not continue to move forward by inertia, because this can lead to various undesirable consequences.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.