A bullet can travel at a speed of over 1000m/s.?
A bullet can travel at speeds exceeding 1000 m/s. When a bullet is fired from a rifle, the initial sound produced by the firing is distinct; however, people at a distance may hear a second sound that is often perceived as even louder. Could you explain the source of this sound? I am somewhat confused as to whether it could be attributed to an echo. Thank you!
4 Answers
When something travels at that speed it compresses the air in front of it forming a shock wave that travels at the speed of sound. This high pressure front causes the loud ƈɾąƈƙ that you hear. The bullet is traveling slightly less than three times faster than that.
If a bullet is coming towards you faster than the speed of sound and you hear it, relax it missed.
The bang of the gun going off travels at about 330 m/s.
After 3 seconds someone 1000m away hears the bang but at the same moment the bullet is rushing past breaking the sound barrier and emitting its own sound.
Further away the bullet sound arrives before the bang.
There could be a third sound as the bullet impacts with the skull!
No, it's because the bullet breaks the sound barrier, that is, it is travelling faster than the speed of sound.
speed of sound at sea level = 340.29 m / s
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