1. The user asks to put the units rad/s² and s, which are units of angular acceleration and time respectively. 2. Angular acceleration is measured in radians per second squared, written as rad/s². 3. Time is measured in seconds, written as s. 4. These units are used in physics and engineering to describe rotational motion. 5. For example, if angular acceleration is $\alpha = 5\ \text{rad/s}^2$ and time is $t = 3\ \text{s}$, these units indicate how fast the angular velocity changes over time. 6. Always keep units consistent when solving problems involving angular motion to ensure correct results.