Quote:
Originally Posted by Skybird
I assume that more or less the bullet travelled near the speed of sound. 3.5 kilometers, 10 seconds flight time: average speed 350 m/sec. Speed of sound: roughly 340 m/sec. The shot sound probably arrived at the target area 0.5 seconds after the target was hit, plus minus some tenths of a second.
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And ISIS aren't exactly a thinktank, so they probably thought that the sound was another shot coming at them
