A gymnast is performing a floor routine. In a tumbling run she spins through the air, increasing her angular velocity from 3.00 to 4.65 rev/s while rotating through one-half of a revolution. How much time does this maneuver take? ok I understand that I am going to be using one of the equations of kinematics for rotational and linear motion. I just don't understand what I am suspose to use the "one-half of a revolution" for.