When a body moves with velocity `V_1` for first half of the journey and `V_2` for remaining half of the journey, its average velocity is given by `2/V_"av"=1/V_1+1/V_2` . If `V_1` and `V_2` are `(15pm0.5)` m/s and `(30pm0.1)` m/s, find the average velocity within error limits.

Explanation

To find the average velocity of a body that moves with two different velocities for equal distances, we can use the formula given in the question. The average velocity \( V_{av} \) is defined as:

\[ \frac{2}{V_{av}} = \frac{1}{V_1} + \frac{1}{V_2} \]

### Step 1: Calculate the average velocity without error limits

...