Finding speed and momentum when rest mass equals double kinetic energy

[aptiva]

hey i came across this question on the web..has to do with relativity...i was jus wondering if anyone knew how to go about doing it ..."a moving aprticle has a rest mass which is double its kinetic energy. fins its speed and momentum"...

 

[hype_chicky]

oh excellent question aptiva i of course know the answer but i will sit back and allow others a chance

 

[hype_chicky]

aptiva what website may i ask did u find it on i wud like to go set its ass on fire

 

[aptiva]

well hype_chicky...i think u should settle down..there is no need for stress...its remarkable to see how one little problem can ignite one to react in such a peculiar manner ... that's just what i love about physics...but back to the real problem...would anyone know how to go abouts solving this?