An object is considered at rest when it is not changing its position over time. On the other hand, an object is said to be in motion when it is changing its position relative to a reference point over time.
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When an object is not in motion, it is said to be at rest.
Rest and motion are relative terms because an object's state of rest or motion is defined in relation to another object. An object can be at rest relative to one object but in motion relative to a different object. This concept is based on the principle of relativity in physics, as described by Galileo and later by Einstein in his theory of special relativity.
No, an object cannot be in motion and at rest at the same time. An object is either in motion, meaning it is changing its position over time, or it is at rest, meaning it is not moving.
The tendency of an object to stay in motion or at rest is called inertia.
For an object to stay at rest, the sum of the forces acting on it must be zero, according to Newton's first law of motion. This means that the forces pushing and pulling on the object must be balanced. Any unbalanced force will cause the object to accelerate or move.