For these problems, look at compression only and ignore bending and buckling. You can nd the relevant material properties in Cameron, table 4.2 or online (cite your sources). Problem 4: In class we did a problem where a person weighting 70kg jumped off a ledge 1.5m high. Just before the person touches the ground their velocity was v0 = 5m/s. In class we calculated the force on their bones if they landed with straight legs (traveling lcm before stopping). Now calculate how much force is needed to stop the person lands then allows the legs to bend another 120m before coming to rest