If you are drive your car into a brick wall and are not wearing a seat belt,you will be badly injured why?your answer should include the word "force" and velocity"
When a car collides with a brick wall without wearing a seat belt, the occupants of the car will be badly injured because of the forces involved. Force is a measure of how hard an object pushes or pulls on another object. In this scenario, the force experienced by the occupants is due to the rapid change in velocity.
Velocity refers to the speed and direction of an object's motion. When a car crashes into a brick wall, the velocity of the car changes abruptly, going from a high speed to a sudden stop. This change in velocity occurs in a very short amount of time.
According to Newton's first law of motion (also known as the law of inertia), an object in motion tends to stay in motion, while an object at rest tends to stay at rest, unless acted upon by an external force. So, when the car comes to a sudden stop, there is a force acting on the occupants that tries to keep them moving at the car's original velocity.
Since the occupants of the car are not wearing seat belts, they are not properly restrained and are likely to continue moving forward at the car's original velocity, even though the car has come to a stop. This is known as inertia. As a result, they may collide with the steering wheel, dashboard, windshield, or other objects in the car's interior, leading to serious injuries.
In summary, without wearing a seat belt, the force exerted on the occupants due to the rapid change in velocity during a car crash can cause them to continue moving forward, resulting in severe injuries from colliding with the car's interior.