state the energy hans-formation which occurs when a car is brought to rest by its break
When a car is brought to rest by its brakes, the energy transformation that occurs is primarily known as kinetic energy to thermal energy conversion.
Here's an explanation of how to derive this answer:
1. Understand the initial form of energy: The car in motion possesses kinetic energy. Kinetic energy is the energy an object possesses due to its motion. In this case, the car possesses kinetic energy due to its speed.
2. Identify the energy transformation: As the car's brakes are applied, the friction between the brake pads and the brake discs generates heat. This heat is a form of thermal energy. Therefore, the kinetic energy of the car is converted into thermal energy as it slows down and comes to a stop.
Please note that there may also be other minor energy transformations occurring simultaneously, such as potential energy to thermal energy conversion due to air resistance or rolling resistance. However, in the context of braking, the primary energy transformation is the conversion of kinetic energy to thermal energy.