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
E
83.3ms-1
Verified Correct Answer: B.
Physical Principles & Numerical Solution
V = \(\frac{2x}{t} = \frac{2 \times 300}{1.8}\)
= 333.33ms-1
Source: Myschool Past Questions Archive (Record #33416)