My neighbor owns a giant trampoline that my brother and I use quite often in the summer time. But at the moment it is covered in snow so rather than actually using it I can think of all the ways that physics is involved in jumping on a trampoline. Newton's 3rd Law is a large part of jumping on my trampoline because the law states that all forces come in pairs. For example, when I jump up and down, I push down on my trampoline with the same magnitude but opposite direction that is pushes me up with. This allows me to accelerate upward and the higher I go, the more I push down on the trampoline and it pushes back on me. Friction is also involved in jumping on a trampoline since there is not much to keep me from slipping. If I misplace my feet in any way, it is likely that I will fall do to the lack of friction that is between my feet and the trampoline.