Explain how seatbelts reduce injury to passengers using Newtons laws of motion

A body in motion stays in motion. Seat belts prevent the body from moving after a crash or other stopping of the car.

Explanation:

Seat belts stop you tumbling around inside the car if there is a collision. Upon sensing a collision the seat belts lock in place. When the car crashes, there is no unbalanced force acting on the person, so they continue forward (Newton's First Law). The person moves against the seat belt, exerting a force on it.

Explanation:

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