O-LevelPhysicsWaves5054/11 · May/June 2022 · Q241 Mark
A man stands between two tall buildings, P and Q. He is 50 m from P and 200 m from Q. 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?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A250 m/s
B300 m/s
C330 m/s
D500 m/s
✓ Correct answer
B: 300 m/s
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