A man standing 300m away from the wall sounds a whistle. The echo from the...
PHYSICS
WAEC 1991
A man standing 300m away from the wall sounds a whistle. The echo from the wall reaches him 1.8sec. later, calculate the velocity of sound in air
- A. 540.0ms-1
- B. 333.3ms-1
- C. 270.0ms-1
- D. 166.7ms-1
Correct Answer: B. 333.3ms-1
Explanation
V = \(\frac{2x}{t} = \frac{2 \times 300}{1.8}\)
= 333.33ms-1
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