Technician a says kinetic friction changes kinetic energy into thermal energy. technician b says static friction holds the car in place when it is stopped. Both A and B are correct.
In static friction, there is found to be some frictional force that tends to resists force that is known to be applied to an object, and the object will be at the same sport at rest until the force of static friction is known to be overcome.
In kinetic friction, the frictional force is one that tend to resists the movement of an object.
Therefore, Technician a says kinetic friction changes kinetic energy into thermal energy and technician b says static friction holds the car in place when it is stopped. Both A and B are correct.
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