Dagger of admire assorted tower thinks, this is not the problem of martial common sense on a firm sense, more resembling is problem of physics of a high school. To this, I can employ him place remnant only very few reserve of middle school knowledge, the attempt solves this problem, in order to provide dinner for netizen. When gun body upend up, show 90 ° included angle to shoot to the sky with the ground, below the circumstance that takes no account of wind resistance, the V2/2g of ＝ of H of the greatest height that bullet rises. Thereafter, bullet will show free falling body to fall by static condition, bullet arrives at the speed V=gt when the ground, √ of whereabouts time T= (H/g) . Initial velocity of contemporary musket bullet is in 700 meters commonly / second ～ 1000 meters / between the second, take intermediate cost 850 meters / second. Criterion the 9.8 ＝ of × of H=8502/2 of the greatest height that bullet can arrive at 36862 meters. Of course, this is the greatest ascendant height of bullet of the musket below vacuum condition. According to tall artillery piece fire learns outside ballistic shoot a watch, the constant value of a quantity of wind resistance is 0.78, that is to say, the wind resistance that artillery shell or bullet sustain in ascendant process, will quits its the kinetic energy of 3/4 above. Can conclude accordingly, the musket bullet that upend fires up, its are the biggest ascendant height is 9000 meters are controlled. Can push cipher out further, the whereabouts time after bullet reachs the greatest height is 30 seconds, the speed when falling to the ground is 294 meters / second. Next subtractive wind resistance is right falling the loss of kinetic energy, can reach, the speed when bullet falls to the ground is 85 meters about / second.
Come according to hundreds years, the experience that must come through shooting gel of body of pig, ox, mankind, ballistics and other object is numeric, flight speed achieves 61 meters / the bullet of second above just penetrates the skin of human body is organized likely, contemporary musket upend up gunshot bullet, form finally be as high as 85 meters / the be born speed of the second, be more than 61 meters / the experience of the second is numeric. Accordingly, can maintain, the bullet that calls toward the sky falls down, seize human life completely likely. Before we pass broadcasting television media, often can listen watch the press that breaks a the dead about some underground hail, the quality of bullet is more than hail normally, the meeting in whereabouts process produces bigger kinetic energy, undoubted meeting makes greater power to human body. For instance, in country of a few the third world wide welcome 4 couplet install 14.5 millimeter to fire machine gun high, its warhead quality is as high as 63.44 grams, although be cast at will from 6 above floor,fall, once hit the head, also meet person of full as a result at the deathtrap, prep let alone projects his thousands of meters of upper air.
Graphic representation: Libyan the 14.5mm of 4 couplet outfit that turns over equipment of governmental military uniform fires machine gun and its bullet high
