Newton's+Puzzle+Box

Newton studied a lot of things in physics and so will you. You will be given a box full of physics widgets. Your task is to pull the widget out and with the direction of you instructor and lab book, figure out what the heck it is supposed to be used for. Kind of a CSI meets Newton. 12 widgets, 12 experiments. You will master them all before you pile into the van for a ride to the pool.