- #1

WrongMan

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- 15

## Homework Statement

photon collides with an electron producing a electron-positron pair, the three particles ( two electrons and one positron) move together in the same direction of the original photon.

calculate the energy of each particle.

## Homework Equations

photon:

Ep=hf

p=E/c

electron/positron

1) E=Ke+me*c^2

## The Attempt at a Solution

so 2)Ep + me*c^2=3E : photon energy plus electron rest energy equals the energy of the 3 remaining particles and since mass and direction is the same the energy is the same, same goes for momentum

3)Ep/c=3p

so 2 equations 3 unkowns so i wrote eq 2) with 1) and substituted k for 1/2*me*v^2 and in eq 3) i substituted p for me*v, this did not yield a correct answers.

how should i do this?