1. The problem statement, all variables and given/known data dv/dt = -βv Integrate to find velocity as a function of time, assume the particle's initial velocity is v0. β is constant v = velocity (not constant) t = time 2. Relevant equations 3. The attempt at a solution dv = -βvdt ∫dv = -β∫vdt --------> limits of integration for the right side are from 0 to t v(t) = -βt + v0 I know i'm probably supposed to separate the variables so that v is with dv and β is with t, but this way seems to work too. Both ways seems correct, but there can only be one right answer... which one is it? Why does my attempt work out mathematically but is still wrong?