A Particle Accelerator Collides Beams of Protons and Anti-Protons with Equal

Multiple Choice

A particle accelerator collides beams of protons and anti-protons with equal and opposite momenta.The aim of an experiment is to create a possible new massive particle with neutral charge and a mass 6 times that of a single proton.Calculate the necessary speed of the protons (and anti-protons) in the collision as a % of the speed of light.

A) 85.9% c
B) 99.9% c
C) 98.7% c
D) 94.3% c
E) None of these is correct.