Reply To: How to build a balloon power car Welcome to BFSU: › Forums › Volume One › Learning Progression “C”: Physical Science, Engineering and Technogy › Lesson C-7. Push Pushes Back › How to build a balloon power car › Reply To: How to build a balloon power car March 17, 2017 at 5:57 pm #1489 knitgrlParticipant The demonstration in the link below clearly illustrates the Third Law of motion. https://teaching.wonderhowto.com/how-to/demonstrate-newtons-third-law-motion-223910/