Question

A gun is fired at a distance of 1.35 km from Mukul. She hears the sound after three seconds. The speed (in m/s) at which sound travels is:

• A. 500
• B. 450
• C. 675
• D. 525

Answer 1

Answer:

B. 450

Distance = 1.35 km = 1350 m
Time = 3 seconds

Speed of sound
$= \frac{\text{Distance}}{\text{Time}} = \frac{1350}{3} = 450 \text{ m/s}$

Speed of sound = 450 m/s