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An electron and positron (anti-electron) has rest energy 0.5 MeV. The two electron and positron traveling...

An electron and positron (anti-electron) has rest energy 0.5 MeV. The two electron and positron traveling in opposite direction at a speed of 0.99999*ccollide to form a new particle with a huge mass in the lab.

A) What is the total energy of the two particles?  

B) What is their Kinetic energy at that speed?

C) What is the momentum of the two particles?

D) What is the rest mass of the new particle discovered?

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