A man standing 300m away from the wall sounds a... - WAEC Physics 1991 Question
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 option: b
V = (\frac{2x}{t} = \frac{2 \times 300}{1.8})
= 333.33ms-1
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