Replies to post #29 on Astronomy - Starry Night

[MorningLightMountain]

for v much lower than c (the speed of light):



where

E= energy
m=mass
v=velocity

in other words, velocity matters much more than how much matter!!!!

PS: the relativistic version.....yikes!!!....a subatomic particle with the energy of a brick falling on your toe!!!!....about as close to c as can be.......



http://journal.batard.info/post/2008/09/12/lhc-how-fast-do-these-protons-go

When getting very close to c, the energy difference between two particles going at almost the same speed can be very large. A famous example of a very high-energy particle detected on Earth is the so-called “Oh-My-God particle”, probably a proton detected at a speed close to 0.9999999999999999999999951 c:

The energy of the Oh My God particle seen by the Fly's Eye is equivalent to 51 joules—enough to light a 40 watt light bulb for more than a second—equivalent, in the words of Utah physicist Pierre Sokolsky, to “a brick falling on your toe.” The particle's energy is equivalent to an American baseball travelling fifty-five miles an hour.
[...]
After traveling one light year, the particle would be only 0.15 femtoseconds—46 nanometres—behind a photon that left at the same time.