1. The problem statement, all variables and given/known data The altitude of the space shuttle during the first 30 s of its ascent is described by the expression у = bt2, where the constant b has the value 2.9 m/s2. Using calculus, obtain an expression for the velocity and acceleration of the space shuttle during this period. 3. The attempt at a solution y' = 2bt y'' = 2b Book is giving me the following for answers: y' = bt y'' = b Am I doing something wrong?