1. The problem statement, all variables and given/known data Bob is running at a constant speed of 5.00 m/s when Alice runs past him in the same direction. Precisely 1.00 s after Alice passes him, Bob starts to accelerate at a constant rate of 2.00 m/s2. Bob catches up with Alice after accelerating for 6.00 s. Alice kept the same constant speed the entire time. What was her speed? 2. Relevant equations vf=vi + at 3. The attempt at a solution Since Alice is running at a constant velocity the whole time, her a=0 m/s^2. That means her initial velocity is equal to her final velocity. vf = vi Now for Bob: vf = vi + at vf = (5m/s) + (2 m/s^2)(6s-1s) vf= 15 m/s So Alice's velocity must have been 15 m/s. I know I calculated Bob's velocity. This is not the correct answer. What am I doing wrong?