1. The problem statement, all variables and given/known data The title, and assume that t=0, x=0 and v=0. 2. Relevant equations Kinematic equations, and area of triangle and rectangle. 3. The attempt at a solution I see what I did wrong with the part that is circled "parabola", as it should be just a straight line, but I am lost as to what is wrong at the part that is circled "curved up". It's speeding up during that part so wouldn't it make sense that the slope is steepest at the top of that section?