Web Results

## Kinetic energy

en.wikipedia.org/wiki/Kinetic_energy

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. ... The kinetic energy in the moving cyclist and the bicycle can be converted to ... However, if the sp...

May 4, 2009 ... If the meter stick were traveling at 99.5% of the speed of light with its ... Everything would seem normal to you, since they do not have a high ... The momentum (and kinetic energy) of a particle pushed to the speed of light would be infinite! ... This is why no object can move at or faster than the speed of light.

## special relativity - Accelerating particles to speeds infinitesimally ...

physics.stackexchange.com/questions/1557/accelerating-particles-to-speeds-infinitesimally-close-to-the-speed-of-light

Dec 2, 2010 ... Since the speed of light is a finite number, why can we go so close to its ... If we' ve gotten so close by giving it larger and larger acceleration every ... And how much of a difference is there between 99.99% the speed of light, and the ... You would need infinite amount of energy to get to c from something less.

## Q: What would you experience if you were going the speed of light ...

Nov 13, 2010 ... The original question was: If I'm moving at the speed of light towards you and I ... and converting them into kinetic energy would get you going really fast, ... point ( no experiment you could possibly do would conclude otherwise). ... But from the perspective of the photon (i.e. the light particle) no time will hav...

## NASA's Cosmicopia -- Ask Us - General Physics - Speed of Light

helios.gsfc.nasa.gov/qa_gp_sl.html

Dec 22, 2006 ... If something has no mass, how could it affect us? The speed of light has been measured often and very accurately, going ... that your theory would have to explain as well or better before ... the increasing kinetic energy of the rod (i.e. its energy of motion) is ... But let's say the spaceship was moving at 0.9 c.

## If a particle with rest-mass were to, in theory, travel at the speed of light

scienceline.ucsb.edu/getkey.php?key=1571

The total energy is theparticle's rest mass energy PLUS its kinetic energy. ... energy of a particle moving at speeds close to the speed oflight (relativistic speeds) ... They get arbitrarilyclose to the speed of light, but theoretically nothing can actually ... If you plug in numbers where v is much smaller than c (for an object t...

## At what speed does the interstellar medium become lethal to high ...

At speeds just below the speed of light, the particles are ultra-relativistic and would ... these fast moving particles, but dust grains have masses a thousand times smaller than the ... to cause severe spacecraft damage given the kinetic energy involved. ... But the situation could well be worse than this if the interstellar medium ...

## Can You Really Go Back in Time by Breaking the Speed of Light ...

www.pbs.org/wgbh/nova/blogs/physics/2015/08/can-you-really-go-back-in-time-by-breaking-the-speed-of-light/

Aug 17, 2015 ... But if it could, the conventional wisdom goes, it would travel back in time. ... Even the floating mineral dust in space carry kinetic energy with it. .... would travel instantly as in now, light would not, it would have to move through ... Photons will collide with many particles present in the vacuum of space and will...

## Relativity - Ask the Physicist!

You assume that if the train has a speed v relative to the earth and the light .... K ≈ mv<sup>2</sup> is the kinetic energy of in classical mechanics of a particle of mass .... But if time is running slower on the moving ship, how would it be possible for .... You could detect it if you were close to a black hole where gravity was much stronger.

## Why you can't travel at the speed of light | Science | The Guardian

www.theguardian.com/science/2014/jan/12/einstein-theory-of-relativity-speed-of-light

Jan 12, 2014 ... Albert Einstein is famous for many things, not least his theories of relativity. ... The length of moving objects also shrink in the direction in which they move. Get to the speed of light (not really possible, but imagine if you could for a ... light speed, any extra energy you put into an object does not make it move ...

### Special Relativity

pages.towson.edu

For particles moving at slow speeds (very much less than the speed of light), the ... Such a particle would have infinite momentum if it could reach the speed of light. ... We can define it to be the rest energy plus kinetic energy ( E = KE + mc 2 )  ...

### How to calculate kinetic energy of a particle moving with speed ...

www.quora.com

Nov 25, 2015 ... A2A To calculate the kinetic energy of a particle moving with ... How much energy is needed for a massive particle to move at the ... If an object could move at close to the speed of light, would it ... Can a device communicate back and forward in time using entangled particles which have been moved to a ...

### How much energy is needed for a massive particle to move at the ...

www.quora.com

For single atomic sub- particles like protons, a LOT of energy. ... However since the particle is moving, you need to increase the amount of ... How much energy would a generator produce if the rotor was moving .9 the speed of light? .... speed of light with kinetic energies of over 4 MeV, how much heat could they produce?