1. The problem statement, all variables and given/known data Given: x=9sin2t +16cos2t+100 The problem asks me for the maximum acceleration and the maximum velocity. 2. Relevant equations dx/dt=v dv/dt=a 3. The attempt at a solution The problem asks me for the maximum acceleration and the maximum velocity. To find the maximum velocity, i set A equal to 0 and i solve for t. But when i substitute the found t in the acceleration, it does not equal zero as it should. I did got the max velocity right though, but i have no idea how to find the maximum acceleration, i could use mass and newton laws, but no mass is given. just the x function. is a dynamics question. help!!!