1. The problem statement, all variables and given/known data A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.20 m/s2 for 15.0 s. 2. Maintain a constant velocity for the next 1.65 min. 3. Apply a constant negative acceleration of −9.92 m/s2 for 3.33 s. (a) What was the total displacement for the trip? m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? leg 1 m/s leg 2 m/s leg 3 m/s complete trip m/s 2. Relevant equations delta X = Vi t + 1/2 a t^2 Vf^2 = Vi^2 + 2 a (delta X) 3. The attempt at a solution I'm sure how to tackle this, but here was my attempt. delta X = (0)(15) + 1/2(2.20)(15^2) = 247.50 I'm kind of stuck at this point, I don't know what to do?!