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Q: Rate at which a bullet drops ( Answered ,   3 Comments )
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 Subject: Rate at which a bullet drops Category: Science > Physics Asked by: bluechristmas-ga List Price: \$5.00 Posted: 27 Nov 2005 05:43 PST Expires: 27 Dec 2005 05:43 PST Question ID: 598080
 ```Does a bullet shot from a gun drop at the same rate as a bullet that is dropped from your hand. If the gun barrel is perfectly level and the bullet does not create lift during its flight, it would seem to me that it would drop at the same rate.```
 Subject: Re: Rate at which a bullet drops Answered By: livioflores-ga on 27 Nov 2005 06:57 PST Rated:
 ```HI!! Your assumption in this ideal system is right, both bullets will drop at the same rate: "A projectile is an object upon which the only force is gravity. Gravity, being a downward force, causes a projectile to accelerate in the downward direction. The force of gravity could never alter the horizontal velocity of an object since perpendicular components of motion are independent of each other; vertical force does not effect a horizontal motion." From "Vectors and Projectiles - Parabolic Motion of Projectiles" at The Physics Classroom: See at this page the clarifying animation!! http://www.physicsclassroom.com/mmedia/vectors/bds.html See also "Facts About Projectile Motion": http://library.thinkquest.org/2779/More.html For formulas and a nice applet on which you play a little see: "Projectile Motion": http://www.ngsir.netfirms.com/englishhtm/ThrowABall.htm Finally for further reading and are some examples: "Horizontally Launched Projectile Problems": http://www.physicsclassroom.com/Class/vectors/U3L2e.html Search strategy: projectile motion I hope this helps you. Feel free torequest for a clarification if you need it. Regards, livioflores-ga```
 bluechristmas-ga rated this answer: `Thanks for your answers. The links you provided were very helpfull.`

 ```It's interesting to add that the gun barrel need no be horizontal for the vertical acceleration to be equal to any other falling object. There's a common question posed in physics classes that goes like this: A hunter is on the ground trying to bag a monkey. A monkey is hanging from a high tree branch and notices the hunter, so it lets loose from the branch to fall safely away. But is it safe? If the hunter has the rifle barrel pointed directly at the monkey the instant it lets loose, at what time should the gun be fired such that the bullet will intersect the falling monkey? The answer is to fire the bullet at the *exact* instant the monkey starts falling. The bullet's path will be a composition of its inertial (straight) motion towards where the monkey was, and its vertical acceleration downwards. The monkey's motion will be its downwards acceleration, which will equal that of the rifle projectile. The bullet will intersect the monkey as they both reach ground level.```
 `What an interesting question!`
 ```will the centripetal force that's acting upon the satellite be acting on the bullet if it's fast enough and thus causing it to revolve around the earth?```