1. The problem statement, all variables and given/known data Justin is racing Mark. Justin accelerates from rest at the starting point at 1.2 m/s^2 [E]. Mark is still adjusting his equipment and 2.0 s later begins to accelerate at 1.5 m/s^2 [E]. Where and when does Mark catch up to Justin? 2. Relevant equations 3. The attempt at a solution I think I need to create two formulas, set them equal to each other, and use the quadratic formula. I'm not sure how to create the formulas though.