ematics 31 11. A ladder, 5 m long, is resting against a gymnasium wall. The top of the ladder begins to slip down the wall at I m/s. How fast is the foot of the ladder moving away from the wall, when the top of the ladder is 3 m above the ground? A. 1.33 m/s B. 0.25 m/s C. 0.75 m/s D. 0.67 m/s