A marching band is practicing. The band director sees the drum major hit a drum. How far away is the director if he hears the drumbeat in 0.40 seconds? The speed of sound is 330 m/s.
Answer
A
12 m
B
132 m
C
264 m
D
825 m
Explanation
Use distance = speed × time. The sound travels at 330 m/s for 0.40 s, so the distance is 330 × 0.40 = 132 m. Therefore, the director is 132 m away, choice B.
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