Hook: demonstrate Galilean canon in class and find the related YouTube video.
Action: students can do the Mini investigation in class. Provide students with three examples , students will work in group of 4, each group will solve one of the problem then they jigsaw the answers and questions. The questions can be tutorial questions on Nelson book.
Debrief: Ask students to write about elastic and inelastic collisions and explain the conservation of momentum in each case and hand out the answers as exit card.