Your adult slams on her brakes in the car and your body keeps moving forward towards the windshield. This is called inertia and is an example of newton 1st Law
You are correct! The situation you described is a perfect example of Newton's First Law of Motion, also known as the law of inertia. According to this law, an object at rest or in motion will remain in its state unless acted upon by an external force. In the scenario you mentioned, your body tends to continue forward in motion due to its inertia, while the car suddenly decelerates, applying an external force that brings you to a stop or pushes you towards the windshield.
