Could someone help me with thsi problem... A 65-kg bungee jumper jumps straight down from the tiop of a bridge. He is tied to a 15-meter-long bungee cord that has an effective spring constant of 400 N/m. (a) How far from the top of the bridge will the bungee-jumper descend(Ignore air friction). (b) Assume that air friction only acts on the guy on the way up. If the average work due to friction for the return trip is 175 joules/meter, how far back up will the guy recoil? I would just like to know the set up.