1. The problem statement, all variables and given/known data http://img35.imageshack.us/img35/7035/picture18hl.png [Broken] http://img195.imageshack.us/img195/7315/picture19dq.png [Broken] http://img171.imageshack.us/img171/7427/picture20e.png [Broken] http://img16.imageshack.us/img16/8384/picture21v.png [Broken] 2. Relevant equations 3. The attempt at a solution I don't know why the values for c and e seem wrong to me. Shouldn't acceleration be positive at only t2 and t3? And velocity decreasing at t1, t4, and t5? Am I thinking of this the wrong way or too much like a physics problem?