Will is 80 kg and is falling while attached to a bungee cord. When the bungee cord is stretched it
behaves like a spring would with constant k = 120 N/m. If Will has a velocity of 20 m/s (down) when the
bungee cord just begins to stretch, what maximum stretch will the cord undergo, assuming that air
resistance does - 1000 J of work on him on his way down to the lowest point? (4 marks)
