A particle moves in a straight line with a uniform acceleration a. Initial velocity of the particle is zero. Find the average velocity of the particle in first 's' distance.

Explanation

To solve the problem step by step, we will use the equations of motion under uniform acceleration.

### Step 1: Write down the known values
- Initial velocity (u) = 0 (the particle starts from rest)
- Acceleration (a) = a (given)
- Distance (s) = s (the distance we want to find the average velocity over)

### Step 2: Use the equation of motion
...