Brad is sitting at rest on a wheeled chair in a long hallway. He and the chair have a combined weight of 540 N. His friend throws a 15 kg medicine ball horizontally at Brad with a velocity of 6 m/s. Brad cataches the medicine ball. If the coefficient of static friction between the chair wheels and the floor is 0.05, how far will Bard travel after catching the ball? My prof said that this is a combination problem meaning that multiple laws of phyics are going to be used. My problem is that I can't tell which laws I need to be using. Any help would be greatly appreciated. Thanks!