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The sound may or may not "come first" when a bullet is fired. Particularly if we make the decision after collecting data from down range. The muzzle velocity of some firearms does notexceed the speed of sound. In those cases, the sound will reach a "target" down range before the bullet does. But the muzzle velocity of other firearms does exceed the speed of sound, and in those cases, the bullet will arrive down range before the sound does.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoThat depends on the direction in which the muzzle is pointing
at the instant when the shot is cranked off.
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What will hit the ground first the bullet shot horizontally or the one dropped?
In theory, if a bullet dropped vertically at the same instant that a bullet is fired horizontally from a gun at the same height, they should both hit the ground at the same time.This example is used to emphasize that that horizontal motion and vertical motion may be analysed separately since they occur independently of each other.This is one of those things that works better in theory than in practice.There is a caveat that is important if you consider doing this in the real world. The process is not happening in a vacuum. The aerodynamics of the bullet fired at high speed is tremendously important. In early gun design, this was not understood and bullets fired from guns were very inaccurate and went up or down or right or left in unpredictable ways. Modern guns stabilize the trajectory by putting a spin on the bullet. The result makes the bullet act like a gyroscope and then to remain pointed forward when it encounters small anomalies in the air and wind. So, the moving bullet is subjected to vertical forces and can not be expected to drop at the same rate as a bullet with no horizontal motion.The principle of independent horizontal and vertical motion works better when illustrated by throwing and dropping heavy rocks. The principle is entirely correct, but there are more vertical forces involved than gravity with the bullets.
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