The speed of sound in the air is 340 m / s, and the average speed of a bullet is 800 m / s.

The speed of sound in the air is 340 m / s, and the average speed of a bullet is 800 m / s. How many seconds will the sound of a shot lag behind a bullet flying 1200m.

To find the required time lag of the sound of the shot from the bullet, we will use the formula: Δt = tz – tp = S / Vz – S / Vp.

Values of constants: S – considered distance (S = 1200 m); Vz – speed of sound in air (Vz = 340 m / s); Vp – average bullet speed (Vp = 800 m / s).

Let’s make a calculation: Δt = S / Vz – S / Vp = 1200/340 – 1200/800 = 2.03 s.

Answer: The sound of the shot will lag behind the bullet by 2.03 s.