Because movie producers have come under pressure for teachingchildren incorrect science, you have been appointed to help acommittee of concerned parents review a script for a new Supermanmovie. In the scene under consideration, Superman rushes to saveLois Lane who has been pushed from a window 300 feet above acrowded street. Superman is 0.5 miles away when he hears Loisscream and rushes to save her. He swoops down in the nick of time,arriving when Lois is just 3.0 feet above the street, and stoppingher just at ground level. Lois changes her expression from one ofhorror at her impending doom to a smile of gratitude as she gentlyfloats to the ground in Superman's arms. The committee wants toknow if there is really enough time to express this range ofemotions, even if there is a possible academy award on the line.The chairman asks you to calculate the time it takes for Supermanto stop Lois's fall. To do the calculation, you assume thatSuperman applies a constant force to Lois in breaking her fall andthat she weighs 120 lbs. While thinking about this scene you alsowonder if Lois could survive the force that Superman applies toher.
