1. The problem statement, all variables and given/known data A relativistic particle travels a length of 3*10^-3 m before decaying.The decay process of this particle is dominated by..... (a)Strong interactions (b)EM interactions (c)weak interactions (d)gravitational interactions. 2. Relevant equations 3. The attempt at a solution Since the question says the particle is relativistic, i took its velocity = c then, t = x/v = 10-11 which is the timescale for weak interactions. But the text says the answer is strong interaction. Then wheres the mistake?