A particle moves on circular path of radius 5 m with constant speed 5 m/s. Find the magnitude of its average acceleration when it completes half revolution.

Explanation

To find the magnitude of the average acceleration of a particle moving in a circular path of radius 5 m with a constant speed of 5 m/s after completing half a revolution, we can follow these steps:

### Step 1: Understand the motion
The particle is moving in a circular path with a radius of 5 m and a constant speed of 5 m/s. After completing half a revolution, the particle will be at the opposite side of the circular path.

### Step 2: Determine the initial and final velocity vectors
- **Initial Velocity (V1)**: At the starting point, we can assume the particle is moving in the positive x-direction. Thus, \( V_1 = 5 \hat{i} \) m/s.
- **Final Velocity (V2)**: After half a revolution, the particle will be moving in the negative x-direction. Thus, \( V_2 = -5 \hat{i} \) m/s.
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