18. Time of splash

1. A stone is dropped from a 46 \(m\) tall building into a pond. When is sound of splash heard at the top? (\(g\) \(=\) \(10\) $m/s^2$ , speed of sound in air \(=\) \(340\) \(m/s\))?

 

 

Thus, the total time taken by the splash sound to reach the top is  \(s\)