A Block That Slides on a Rough Surface Slows Down

Multiple Choice

A block that slides on a rough surface slows down and eventually stops.The reverse process never occurs.That is,a block at rest never begins to move and accelerate on a rough surface without the action of an external agent.The second situation is forbidden because it would violate

A) conservation of total energy.
B) conservation of momentum.
C) the first law of thermodynamics.
D) the second law of thermodynamics.
E) both the first and second laws of thermodynamics.