Elastic Superman Collision with conservation of momentum (Pb 2)
Channel: Dr Feito
Date: 2016-10-27

Images:
superman: http://www.deviantart.com/morelikethis/580814752
rubberball: http://connorsbasics.com/Shop/Office-Supplies/Essentials,-Everyday-Desk-Supplies/Rubber-Bands/58606/