Question

PHYS:

1- Explain how Newton’s First Law of Motion is applied to the seatbelt mechanism in a car. Please include an illustration of the mechanism to give a clearer explanation.

Answer 1

Newton's First Law of Motion:- Newton's First Law of Motion is also known as Law of Inertia it states that if an object is in motion it will stay in motion and an object at rest will stay at rest, at a constant velocity, unless an external force acts upon it.

Application of Newton's First Law of Motion on seatbelt mechanism:-Newtons First law of motion is applied to seat belts as per statement think about situation , what happens when a person who drive a car don't wear a seat belt and car comes to a quick stop. Then what happens to driver? . Driver move forward and stay in motion until an external force acts upon it. An external force is one that is not opposed by an equal and opposite force operating directly against the force intended to cause a change in the object's state of motion or rest. So, when driver come to a stop, driver wouldn't stop motion unless a force is caused to change your motion and put you at rest. If a person wearing a seat belt, the seat belt would act as an external force, it would stop driver from being in motion.

Mechanism: Mechanism involve is inertia is the property of an object that resist the change in motion. Inertia comes from mass. The greater the mass of an object the more will be inertia thats why Newtons First Law is often called the law of inertia. Inertia also has to do with seat belts and save the driver. people will experience inertia in a moving car. Seat belts are provided in cars because of the effects of inertia. If a car on a highway is traveling at a very high speed speed and the car slams into another car, person inside the car fly forward into the dashboard. Why this happens? Because, according to Newton's first law, an object in motion will remain in motion unless an external force acts on it. When the car hits the wall, person would keep moving in a straight line and at a constant speed until the dashboard applies a force. Seat belts hold driver and passengers down, and protecting them from their own inertia.