Speed of sound

The average speed of sound is 330 metres per second. Estimate how long it will take to hear a church bell 1 km away. Calculate the distance from which you would hear the sound after 10 seconds.

Final Answer:

t =  3.0303 s
x =  3.3 km

Step-by-step explanation:

$$\begin{gathered} v=330\text{m/s} \\ s=1\text{km}\to \text{m}=1\cdot 1000\text{m}=1000\text{m} \\ s=v\cdot t \\ t=s/v=1000/330=3.0303\text{s} \end{gathered}$$

$$\begin{gathered} t_2=10\text{s} \\ {s}_2=v\cdot t_2=330\cdot 10=3300\text{m} \\ x=s_2\to \text{km}=s_2:1000\text{km}=3300:1000\text{km}=3.3\text{km}=3.3\text{km} \end{gathered}$$

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