Physics · May / June 2022 · Paper 12 · Question 28

A man stands between two tall buildings, P and Q. He is 50 m from P and 200 m from Q. [diagram showing buildings P and Q, distances 50 m and 200 m, man with horn] He sounds a horn. He hears the first echo from building P and 1.0 s later he hears the first echo from building Q. What is the speed of sound calculated using this information?

1. A250 m / s
2. B300 m / s
3. C330 m / s
4. D500 m / s

As printed in the paper