Question

an observer
sitting in the line of two tanks watches the flashes of two tanks firing at each other at the same time but he hears the sound of 2 seconds and 3.5 seconds after seeing the flashes if distance between the two tanks is 510 M and find the speed of the sound

Answer 1

the answer to your question is 185.4 m/s approx

Answer 2

first speed = distance ÷ time
= 510 ÷ 2 = 255 m/s
second speed = 510 ÷ 3.5
= 145.7 m/s (approx)

average speed = total distance ÷ total time = 510 ÷ 5.5 = 92.7 m/s (approx)