Final answer:
The question asks for calculations related to the physics of a ball in free fall, including time to impact, impact velocity, and other motion parameters using kinematic equations.
Step-by-step explanation:
The question pertains to the free fall of a ball in the context of physics, specifically the study of kinematics. In this scenario, a ball is thrown downward from a building with a known height and an initial velocity. Using physics kinematic equations, one can determine the time it takes for the ball to reach the ground, the velocity upon impact, and other characteristics of its motion. The questions involve applying the position function for free-falling objects to calculate relevant parameters such as elapsed time, impact velocity, and the motion of projectiles.