No motion or no motion is absolute. Explain it.
Actually, whether an object is at rest or not depends on the interface object.
If the reference frame is actually at rest, the object will be actually at
rest with respect to that time. This type of rest is called absolute rest. A
body is said to be in absolute rest when it is in rest with respect to an
absolute rest object. Similarly, the absolute motion of a body is its motion
with respect to a reference object absolutely at rest.
But in this universe, it is not possible to get a reference object, which is
at absolute rest. Since the earth is continuously moving around the sun, while
the sun itself is moving along the galaxy with its planets and satellites.
Thus when we say that a body is at rest or in motion, we mean it is to be so
with respect to a body apparently at rest.
So, we can say that in this universe all rest and all motion are relative. No
rest or no motion is absolute.
