when is an object said to be at rest give an example
Rest (physics) In physics, rest is the state of an object being stationary relative to a particular frame of reference or another object; when the position of a body with respect to its surroundings does not change with time it is said to be "at rest". According to the theory of relativity, it is said that an object is "at rest relative to" another. For example, a train decelerates approaching a station and eventually comes to rest alongside the platform. The train can be said to be "at rest with respect to the station", or, as the correct frame of reference is usually implicit and/or provided by context, simply "at rest". In reality, there is nothing at absolute rest. For example, Earth's gravitation constantly pulls objects toward its surface, while Earth is one of the objects the Sun constantly pulls towards itself, causing it to orbit the Sun; the Sun, in turn, orbits the center of the Milky Way; and so on.
Ain't No Rest for the Wicked The song talks about three particular instances in which the narrator realizes "there ain't no rest for the wicked." First, he encounters a prostitute asking if he desires to spend the night with her. The narrator proceeds to ask her why she does what she does. The chorus (her response) analyzes the main reasons why individuals follow the paths they follow ("...Money don't grow on trees, I've got bills to pay, I've got mouths to feed..."). The narrator, fifteen minutes later, is mugged by a criminal, whom he asks the same question and from whom he receives the same answer. Finally, upon turning on the television, the narrator sees a preacher being arrested for stealing the funds of his church. This is followed by a third chorus saying that everyone is the same and we all have no rest "until we close our eyes for good."