Question

an echo ia heard after 0.8sec when a person fires a cracker 132.8m from a high building calculate the speed of sound​

Answer 1

Answer:

$332m/s$

Explanation:

The speed of sound is given by $\frac{2d}{t}$ where d = distance between the person and the building.

distance (d) = 132.8m

time (t) = 0.8sec

speed of sound = $\frac{2X132.8}{0.8} = 332m/s$