2nd+Sticker-+Sam+T


 * stickers-sam
 * string-micheal
 * fan-sam
 * sticks-micheal
 * track-sam
 * plastic cups-sam
 * wieghts-micheal
 * marbles-micheal

chemical-baterries,glow sticks,ipod. thermal-light,friction,toasters. acoustic-music,gutair,piano. electromagneticomagnet-electromagnets,light,microwaves. electrical-wire,computer,simple circut.

when we pull back a rubber band it has 100% poteintial energy when its almost at its target it has 100% kinetic energy. we will use this in our project by pulling back a string with a wieght which will have 100% potential energy and the right before it hits the marble it will have 100% kinetic.