A ring, a disc and a solid sphere, all of different masses and sizes, roll from rest without…

Step 1. Block. $\sqrt{2 \times 9.8\ \text{m/s}^2 \times 1.6\ \text{m}} = 5.60\ \text{m/s}$.

Step 2. Sphere. $\sqrt{\dfrac{31.36\ \text{m}^2/\text{s}^2}{1.4}} = 4.73\ \text{m/s}$.

Step 3. Disc. $\sqrt{\dfrac{31.36\ \text{m}^2/\text{s}^2}{1.5}} = 4.57\ \text{m/s}$.

Step 4. Ring. $\sqrt{\dfrac{31.36\ \text{m}^2/\text{s}^2}{2}} = 3.96\ \text{m/s}$.