A thrill-seeker (mass 80.0 kg) bungee jumps off a bridge spanning a 110 m deep river canyon. After they have fallen 70.0 m the cord begins stretching, bringing them to rest 10.0 m above the river.

a. With the system of interest as the thrill-seeker + Earth draw an energy bar chart for each of the following phases of the situation. If you make any other choices or assumptions in drawing the energy bar charts state what they are:

• From just before the thrill-seeker jumps to just before the bungee cord begins stretching.

• From just before the bungee cord begins stretching to when the thrill-seeker is10.0 m above the river.

b. Make an estimate of the average force exerted by the bungee cord on the thrill-seeker.If you make any further assumptions in doing this, state what they are. Give at least one reason why you shouldn't put that much confidence in this estimate.

Answer rating: 100% (QA)

a Energy bar charts for the two phases 1 From just before the thrillseeker jumps to just before the bungee cord begins stretching Initially the thrill... View the full answer