1. The problem statement, all variables and given/known data A particle moves in such a way that its position z, in meters, is given as a function of time t, by the equation z = 2t^2 − 3t^3. At what times is the particle at position z = 0? (two answers; one is 6E-1) 2. Relevant equations z = 2t^2 − 3t^3 3. The attempt at a solution I've tried plugging in certain numbers and i'm trying to figure out what my teacher means by 6E-1. Refreshing my memory of calculus etc..