On being introduced to the laws of thermodynamics, a student retorted, “When the brakes of a moving car are applied, the kinetic energy of the car does diminish and even drops to zero when the car comes to a stop.” The student thought that his observation about the car contradicted the first law of thermodynamics. Does the reduction of the car’s kinetic energy really contradict the first law of thermodynamics

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Not what goes around on earth but the universe too.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction