Physics
Stand flatfooted next to a wall and make a mark at the highest point you can reach. Then jump vertically and mark the highest point. The distance between the marks is your vertical jumping distance. Use this to calculate you hang time. For this project, I first marked how high my standing vertical reach was by making a mark on the wall with a piece of tape. I then jumped from a stationary point and made a second mark on the wall at the highest point of my jump. When a person leaps upward, jumping force is applied only while your feet make contact with the ground.