What is the relative speed of two particles travelling towards each other with speed 0.8c?

Explanation:

given,

velocity of two particles

u = 0.8 c

v = -0.8 c

According to the Lorentz Transformation Equation the relative velocity of 2 object moving.

hence, the relative velocity of the two particle is equal to

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

because if the tool that you are using is not balanced it there would be false mass.