What do you mean by a body at rest and a body at motion ?

Explanation

To understand the concepts of a body at rest and a body in motion, we can break it down into clear steps:

### Step-by-Step Solution:

1. **Definition of Rest**:
- A body is said to be at rest if its position does not change with respect to time. This means that if you observe the body over a period of time, it remains in the same location.
- **Example**: Consider a ball placed on a floor. If you check the position of the ball after 1 second, 2 seconds, or any time interval, and it is still in the same spot, we say the ball is at rest.

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