How Newtons second law affects seatbelts
Newtons second law states "The acceleration of an object by a force is inversely proportionate to the mass of an object and directly proportionate to the force". The first part means that the less mass an object has the greater the acceleration, and the more mass the less acceleration. Acceleration means a change in speed or direction. The second part of that means there is more force exerted on you, the more you will accelerate. If you are in the car and you crash you will want to keep moving (Newtons first law), but you won't move forward as much if the seat belt applies it's force on you and makes you accelerate.
Newtons second law states "The acceleration of an object by a force is inversely proportionate to the mass of an object and directly proportionate to the force". The first part means that the less mass an object has the greater the acceleration, and the more mass the less acceleration. Acceleration means a change in speed or direction. The second part of that means there is more force exerted on you, the more you will accelerate. If you are in the car and you crash you will want to keep moving (Newtons first law), but you won't move forward as much if the seat belt applies it's force on you and makes you accelerate.