A man shoots a target at a distance of 34 m. The speed of a bullet is 680 m / s. Determine how long

A man shoots a target at a distance of 34 m. The speed of a bullet is 680 m / s. Determine how long after a shot a person will hear the sound of a bullet hitting a target if the speed of sound propagation in the air is 340 m / s.

Task data: S (distance from person to target) = 34 m; Vp (bullet speed) = 680 m / s.

Reference values: according to the condition Vz (speed of sound propagation in air) = 340 m / s.

The time elapsed between the shot and the audibility of the impact sound is determined by the formula: t = t1 + t2 = S / Vp + S / Vz.

Let’s make a calculation: t = 34/680 + 34/340 = 0.05 + 0.1 = 0.15 s.

Answer: A person should hear the sound of a bullet hitting a target 0.15 seconds after the shot.