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
Correct Answer: Option B
Explanation
V = (frac{2x}{t} = frac{2 times 300}{1.8})
= 333.33ms-1