1. Bobby challenges his older brother, Mark, to a race: Mark decides to give Bobby a head start, by waiting a while after Bobby starts running. Bobby originally runs at a constant 2.00 m/s for 45.0 m. He then gets tired and stops for 12.0 s. At that time, he starts again. This time he starts from rest and accelerates at 0.160 m/s until he reaches 2.50 m/s right at the finish line. After waiting some amount of time, Mark starts running at a constant 3.00 m/s until he catches up to Bobby right at the finish line. How long did Mark need wait before running so that he would just catch up to Bobby at the finish line (that is: tobby - twerk)?| SHOW ALL STEPS FOR CREDIT