Two identical stunt professionals A and B stand on the roof of building 1. Person A steps off of the roof and falls vertically onto the solid ground. At the same instant, person B steps off the roof while holding onto a rope with its opposite end is fixed to building 2 of the same height. The rope is initially horizontal, and after swinging downward almost the same vertical distance as A fell, person B collides with the solid wall of building 2. (a) Which person will sustain more serious injuries, or will both people sustain injuries of the same seriousness? Explain your reasoning. (b) Which person will reach his impact point in less time, or will both people reach their impact points at the same time? Explain your reasoning in a coherent paragraph-length response that discusses appropriate physical principles.

Two identical stunt professionals A and B stand on the roof of building 1. Person A steps off of the roof and falls vertically onto the solid ground. At the same instant, person B steps off the roof while holding onto a rope with its opposite end is fixed to building 2 of the same height. The rope is initially horizontal, and after swinging downward almost the same vertical distance as A fell, person B collides with the solid wall of building 2. (a) Which person will sustain more serious injuries, or will both people sustain injuries of the same seriousness? Explain your reasoning. (b) Which person will reach his impact point in less time, or will both people reach their impact points at the same time? Explain your reasoning in a coherent paragraph-length response that discusses appropriate physical principles.