Final answer:
Seatbelts are needed for protection from injuries, reduction of impact forces, prevention of ejection, and as a legal requirement.
Step-by-step explanation:
Seatbelts are needed for several reasons:
- Protection from Injuries: Seatbelts restrain the body during sudden stops or collisions, reducing the likelihood of being thrown forward and hitting the windshield or other hard objects in the car.
- Reduction of Impact Forces: Seatbelts increase the time over which the force of impact acts, which decreases the force on the body. This is particularly important in preventing severe injuries.
- Prevention of Ejection: Seatbelts prevent occupants from being ejected from the vehicle during a collision, reducing the risk of serious injuries or death.
- Legal Requirement: Government enacts laws requiring the use of seatbelts to promote safety and reduce the number of accidents in which drivers and passengers are injured.