Assignment:
The Great Sandini is a circus performer with mass 60.0 kg who is shot from a cannon (actually a spring gun). You don't find many men of his caliber, so you help him design a new gun. This new gun has a very large spring with a very small mass and a force constant of 1300 N/m that he will compress with a force of 5000 N. The inside of the gun barrel is coated with Teflon, so the average friction force will be only 48.0 N during the distance of 4.70 m that he moves in the barrel. At what speed will he emerge from the end of the barrel, a distance 1.80 m above his initial rest position?