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I don't know who is the name of the scientist who proved all falling objects fall at the same speed.
Why is a spent bullet more dangerous than a falling feather.

2007-01-05 17:58:31 · 7 answers · asked by Anonymous in Science & Mathematics Physics

7 answers

Galilie Galileo!!

He is the scientist who proved all falling objects fall at the same speed.
But ITS TRUE ONLY IN VACUUM !! where there is no AIR RESISTANCE

a spent bullet has more momentum by the virtue of its larger mass than the feather.
Since momentum = Mass * velocity

It hits an object with more force due to larger momentum than a falling feather.....thats why more dangerous!!

If done in presence of air.....the feather due to larger air resistance (coz of more surface area) will fall after a long time than the bullet.

2007-01-05 18:03:20 · answer #1 · answered by Som™ 6 · 0 0

a spent bullet if fired at an arc of 45 degrees will achieve its maximum range, a .22 calibur long rifle rond will travel almost 1 mile when fired in this arc. if hit by this round it will cuase little to no actual damage, a big bruise. A .303 calibur firle round on the other hand has several times the mass and thus if firing at an arc will still kill a person from over 800 meters away. this is a product of the mass of the projectile and the angle of decent. the steeper the angle the greater the acceleration will be. if the projectile is in free fall as in gallaleos experiments the resultant of any free falling body is mg or mass times the acceleration due to gravity, or 9.8 meters per sencond squared = 32.2 feet per second squared. since feathers offer frictional resistence to air they fall at a slower rate, and because the mass of a single feather is much less than that of a .303 calibur projectile it has less force on impact. a 32 gram bullet falling at 9.8 meters per second square will do a lot more damage then a 1 gram feather falling at the same speed, 32 times more damage to be precise.

2007-01-05 18:39:45 · answer #2 · answered by nyxcat1999 3 · 0 0

They fall at the same speed in a vacuum. A feather will probably fall more slowly than a bullet because of its weight and air resistance. If you imagine a piece of lead falling from a mile in the sky and hitting you in the head, it's pretty obvious that it will hurt more than a fetaher. But the keywords here are: in a vacuum.

2007-01-05 18:06:52 · answer #3 · answered by What_a_what 2 · 0 0

because generally a bullets energy is not spent by the time it hits the ground because it flys in an arch ... a typical small arms rifle bullet will hit the ground within 6-800meters unless its fired straight up ... and then if it fell all u would be dealing with is the energy contained in the weight of the lead at the speed it is falling ... probably a big knot on the head ...

2007-01-05 18:07:47 · answer #4 · answered by Anonymous · 0 0

Probably because that bullet was spent for a reason, and that spent bullet's intentions are bad, very bad indeed.

2007-01-06 02:03:12 · answer #5 · answered by gonad_obrien 2 · 0 0

Bullets don't catch air so they don't drift slowly downward like feathers.

2007-01-05 18:07:20 · answer #6 · answered by Ta Dah! 6 · 0 0

a feather creates a lot more air resistance

2007-01-05 18:15:52 · answer #7 · answered by futureastronaut1 3 · 0 0

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