A 4.9N hammer head is stopped from an inital downward velocity of 3.2m/s in a distance of .45cm by a nail in a pine board. In addition to its weight there is a 15N downward force on the hammer by the peson using the hammer. Assume the acceleration of hte hammer head is constance while its in contact with the nail and moving downward. a) Free body Diagram for the hammer head and identify the reaction force to each force in teh diagram. b) Calculate th downward force of F exerted by the hammer head on the nail while the hammer head is in contact with the nal and mocing downward. I can't seem to get the right answer (b - 5.9X10^2 N). If someone could help me out with the steps (like equations to use and any explinations you think might necissary) that would be cool. I think I have the freebody diagram but if there is some easy way to explain it that would be nice too... the second part is more important though.