The maximum energy a bone can absorb without breaking is surprisingly small. for a healthy human of mass 60 kg, experimental data show that the leg bones can absorb about 200 j. a. from what maximum height could a person jump and land rigidly upright on both feet without breaking his legs? assume that all the energy is absorbed in the leg bones in a rigid landing. b. people jump from much greater heights than this; explain how this is possible.