Answer to Question #221786 in Physics for Sadia Shafique

Question

While leaving the movie theatre after a great show, Matt Damon comments on how cold it is outside and asks you if you have any idea how cold it actually is. You know that you are standing 68.0 m away from the high exterior walls of the theatre. Matt Damon claps his hands loudly and you hear the echo of your clap 0.47 s later; you were timing this with an extremely accurate stopwatch. Calculate the temperature and impress Matt Damon.

Answer 1

$$v=\frac{2(68)}{0.47}=289\frac{m}{s}\\T=-65\degree C$$