A body is moving along a circular path of radius R. What will be the distance travelled and displacement of the body when it completes half a revolution ?

Explanation

To solve the problem of finding the distance travelled and the displacement of a body moving along a circular path of radius \( R \) after completing half a revolution, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Circular Path**:
- The body is moving along a circular path with a radius \( R \).
- When it completes half a revolution, it moves from one point on the circle to the point directly opposite it.

...