This clip involves students engaged in a discussion during a whiteboard session. The discussion mainly focuses one student’s explanation for obtaining the net force exerted on a falling object. One student incorrectly objects, saying that the graphs don’t match up, but he is corrected by other students.
This clip takes place during week 9 (Investigating Forces Part2). The problem being discussed is problem #5 from the “Newtons second law variation on a theme” worksheet.