A stone is dropped from the top of a tower `500 m` high into a pond of water at the base of the tower. When is the splash heard at the top ? Given, `g = 10 m//s^2` and speed of sound `= 340 m//s`.

Explanation

To solve the problem of when the splash is heard at the top of a 500 m tower after a stone is dropped into a pond, we can break the solution down into two main parts: the time taken for the stone to fall and the time taken for the sound of the splash to travel back up to the top of the tower.

### Step-by-Step Solution:

1. **Calculate the time taken for the stone to fall:**
- We can use the equation of motion for free fall:
\[
s = ut + \frac{1}{2} a t^2
...