Mass Dillation / Energy Question (1 Viewer)

[phoenix159]

In a particle accelerator, a fast moving particle (with v = 0.99c) decays into two photons, of total energy of 6.2 × 10−27 J. What is the rest mass of the fast moving particle?

 

[Zeref]

1.Use m=e/c^2 and solve for m.
2.Substitute into mass dilation formula. Use answer from 1 as mv.