I'm thinking space shuttle but - we'll see..
Answer by borisOgden · Jun 11, 2010 at 03:00 AM
Helios that reached 150,000 mph. The Helios, which holds the record for fastest manmade object, was a series of two spacecraft launched in the mid-1970s to study the Sun. Both probes were developed through cooperation between the US and West Germany with scientists from both nations providing experiments and NASA providing the launch vehicle and booster. Helios 1 was launched in December 1974 and Helios 2 in January 1976, both reaching the Sun within about three months.
Answer by snack pack88 · Jun 11, 2010 at 01:37 AM
I believe it would be the space shuttle at the speeds it moves at but if your talking about whats the fastest thing we've propelled and is very small would be small subatomic particles in the massive hadron collider which they've gotten them up to speeds 99.99% the speed of light.
Answer by trueb · Jun 11, 2010 at 02:08 AM
the LHC uses 7 Tara Electron Volts (TeV) which is the charge of an electron times voltage, its a unit of energy, 7 TeV is a huge amount of energy. the mass of a proton is 1.67*10^-27 KG or 938.27Mev/C^2 (another unit of mass)
using the relativistic kinetic energy equation E=MC^2((gamma) - 1) we get 7 = (938.27Mev/C^2)C^2(gamma -1) ... 7Tev = 938.27MeV(gamma - 1) 7462.69=gamma -1 gamma = 7463 (aprox) gamma = 1/sqrt(1-v^2/c^2) using more algebra...
we find it gets so close to the speed of light you cant get a good decimal number
Answer by trueb · Jun 11, 2010 at 02:57 AM
it has been brought to my attention that in my previous answer a proton is not a man made particle, although it can be man made. and the anti protons that are going the other way are man made...
if you still choose not to accept my answer i offer an alturnitive
Voyager 1 is moving at 3.602 AU/year or 10,604.3661 miles per hour
Answer by r0bErT4u · Aug 30, 2010 at 02:05 AM
the electromagnetic rail gun, or rail gun for short. Using a magnetic field powered by electricity, a rail gun can accelerate a projectile up to 52,493 feet (16,000 meters) per second ... rail guns can hit a target ~250 miles away in six minutes.
Note: Speeds would be faster used/fired in the vacuum of outer space?!
Beam velocity. The particles "fired" by a PBW will travel at nearly the speed of light (186,000 miles per second). The advantage of such a high-velocity beam is that computing the aim point for a moving target is greatly simplified. The effect of this extremely high velocity is essentially to fix a target, even if the target attempts evasive action. For example, if the weapon were required to shoot at a reentry vehicle (RV) some 50 kilometers distant and traveling at the high speed of 20,000 feet per second, the RV would travel only about 5 feet from the time the weapon fired until it was struck by the beam. It is this aspect of PBWs that makes feasible the task of "shooting a bullet with a bullet," as the ABM targeting problem is sometimes characterized.
> The speed of a beam approaching that of light (300,000 km/sec) in combination with the energy created by the weapon would negate any realistic means of defending a target against the beam. Target hardening through
"... Cyclotron particle accelerators, linear particle accelerators, and synchroton particle acclerators can accelerate positively charged hydrogen ions until their velocity approaches the speed of light, and each individual ion has a kinetic energy range of 100 MeV to 1000 MeV or more. Then the resulting high energy protons can capture electrons from electron emitter electrodes, and be thus electrically neutralized. This creates an electrically neutral beam of high energy hydrogen atoms, that can proceed in a straight line at near the speed of light to smash into its target and damage it.
The pulsed particle beam emitted by such a weapon may contain up to 1 gigajoule of kinetic energy or more.
shielding or materials selection would be impractical or ineffective , especially if the beam could be maintained at full power and precisely focused on the target. ..."