In the context of classical physics, it was commonly believed that objects could come to a complete rest in the absence of any external forces. This idea was based on the principle of inertia, which states that an object at rest tends to stay at rest unless acted upon by an external force.
However, with the advent of quantum mechanics and our deeper understanding of the nature of matter and energy, the concept of absolute rest has been challenged. According to quantum mechanics, even at a temperature of absolute zero (0 Kelvin or -273.15 degrees Celsius), particles still possess a minimum amount of energy known as zero-point energy. This residual energy keeps particles in constant motion, even if the motion is extremely small or difficult to detect.
Furthermore, the Heisenberg uncertainty principle in quantum mechanics states that there is a fundamental limit to the precision with which certain pairs of physical properties, such as position and momentum, can be simultaneously known. This principle implies that particles cannot have definite values for both position and momentum simultaneously, even in the absence of external forces. This means that on a fundamental level, particles are always in motion and do not possess a well-defined, absolute rest state.
In the realm of relativistic physics, as described by Einstein's theory of special relativity, the concept of absolute rest is also challenged. According to special relativity, the laws of physics are invariant under Lorentz transformations, and the speed of light is constant for all observers. This implies that there is no preferred or absolute frame of reference, and the notion of an object being completely at rest is relative to the observer.
In summary, based on our current understanding of quantum mechanics and relativity, it is unlikely that there are objects in the natural world that can be completely at rest. The motion of particles due to zero-point energy and the absence of an absolute frame of reference challenge the notion of absolute rest.