1. The problem statement, all variables and given/known data The position of the center of the box shown is given by the equation x = 4.4 m * cos(29/sec * t) -How long does it take the box to move from -2.2 m to +2.2 m? 2. Relevant equations x = 4.4 m * cos(29/sec * t) 3. The attempt at a solution ±.5=cos29t [arccos(-.5) - arcccos(.5)]/29=.03611 sec it says its wrong.