The first Bungee cord jump was done on April 1. 1979 by four members of the Oxford University Dangerous Sports Club. They jumped from the 76m high Clifton Suspension Bridge in Bristol EnglandImagine that you are the person in charge of buying the right bungee cord. They used a 40 m cord that stretched an additional 35 m (so the person stopped 1 m above the ground). If the jumper's mass was 70 kg what is the k value of the cord you need to buy ?
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