Many injuries that occur in extreme sports involve the breaking of bones. Follow the link to the video about the human skeleton. Then find an image of a human skeleton and do some research so you can identify and label the bones in the arms and the legs.
https://www.bbc.com/bitesize/clips/ztfnvcw
Watch the following video on The Science of Mountain Climbing, and then summarise what you have watched and learnt. https://www.youtube.com/watch?v=T1QCCsUpTr0
https://www.youtube.com/watch?v=UpWU2Hg1sBs
Watch the link above and then try conducting your own parachuting experiment.