A man stands in front of a tall wall and produces a sound. If he receives the echo of the sound two seconds later, calculate his distance from the wall. (The speed of sound in air is 330ms-1)
-
A.
600m -
B.
400m -
C.
330m -
D.
328m -
E.
165m
Correct Answer: Option C
Explanation
x = vt/2 = (frac {330 times 2} {2}) = 660/2 = 330m