A boy stands 60m in front of a tall wall and claps.
60 m went missing
A boy stands in front of a tall wall and claps. The boy continues to clap every time an echo is heard. Another boy finds that the time taken between the firs and 51st clap is 18s. v=?
330m/s
340 m/s
333m/s
none

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2 Answers
Sayan Sinha
·20130803 09:10:37
Answer in all probability is 340 m/s.
I used a very crude method to arrive at the solution. I will think of another solution...