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Homework Statement
the particles in a high energy accelerator experiment are approaching each other head on, each with speed of 0.9520c as measured in laboratory. what is the magnitude of the velocity of one particle relative to the other?
Homework Equations
vx = vx' + u / 1 + (uvx' / c2)
The Attempt at a Solution
i can't work out the variables.
the two reference frames are:
1. the lab
2. one of the particles
but that means vx = 0.
so I am lost..