What is Newton's first law of motion?
Newton's first law of motion, also known as the law of inertia, states that an object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This means that an object will tend to resist any change in its state of motion.
For example, if you are riding in a car and the car suddenly stops, you will continue to move forward until you are stopped by the force of the seatbelt or the dashboard. This is because your body was in motion and it will tend to stay in motion unless acted upon by a force.