Cord Tie

multiple choice, what's the answer?

A woman performs a 'bungee jump', falling from a bridge with a length of elastic cord tied around her ankles. The gravitational potential energy of lost by the jumper at the lowest point has been transferred as:
A elastic strain energy in the cord.
B elastic strain energy and internal energy in the cord
C kinetic energy of the jumper OR
D kinetic energy of the jumper plus internal energy in the cord.

With reasons please. Thanks a lot.

Like all multiple choice you have to read carefully. The key bit is "at the lowest point".

At the lowest point the jumper has no velocity as their velocity is right at the point between going down and going up. So they have no kinetic energy. This rules out C and D.

Most of the energy will be transfered to the strain energy is the cord so it is A or B. However the transfer is not perfect and there will also be heat generated. Not sure what is meant by "internal energy in the cord" I would argue this includes heat in the cord. On that basis I would go with answer "B".

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100 pcs 4 inch White Nylon Cable Wire Zip Ties Cord 100mm x 3 mm 1 pack
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2424 2 FT HEAVY DUTY ORANGE HOOK BUNGEE CORD TIE DOWN STRAP 24 PC SET
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1000 PCS Pack 6 inch White Network Cable Cord Wire Tie Strap 30 Lbs Zip Nylon
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100 PCS Pack 6 inch White Network Cable Cord Wire Tie Strap 30 Lbs Zip Nylon
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9 Ball Bungee Cord Stretches to 16  TIE DOWNS 12 pcs NEW
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10 PK Heavy Duty 18 x 1 2 Dia Thick Bungee Cords Tie Down Cord Strap
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Heavy Duty 1000 PCS Pack 8 inch Black Network Cable Cord Wire Tie Strap 50 Lbs
Heavy Duty 1000 PCS Pack 8 inch Black Network Cable Cord Wire Tie Strap 50 Lbs
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Heavy Duty Bungee Cord 1 2 x 36 Tie Down
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uxcell Nylon Network Cable Wire Trim Wrap Zip Tie Cord Strap 5x300mm 250 Pcs
uxcell Nylon Network Cable Wire Trim Wrap Zip Tie Cord Strap 5x300mm 250 Pcs
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100 PCS Self Locking Network Nylon Cable Wire Zip Tie Cord Strap
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4 inch 100mm x 3 mm White Nylon Cable Wire Zip Ties Cord 100 pcs
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20 Easy Use Wire Cord Cable Clips Ties Organizer Holder Home Room Decor DIY MA
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100Pcs White Nylon Plastic Zip Trim Wrap Cable Loop Ties Cord Wire Self Lock
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12 ATE PROFESSIONAL 96 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92035
12 ATE PROFESSIONAL 96 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92035
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12 ATE PROFESSIONAL 48 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92028
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12 ATE PROFESSIONAL 24 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92024
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24 ATE PROFESSIONAL 24 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92024
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24 ATE PROFESSIONAL 36 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92026
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24 ATE PROFESSIONAL 48 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92028
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24 ATE PROFESSIONAL 96 HEAVY DUTY BUNGEE CORDS TIE DOWN STRAPS 1 2 THICK 92035
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3x100mm Nylon Cable Ties with Marking Tag Plastic Cord Wire Strap Zip Label Ties
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3x100mm Nylon Cable Ties with Marking Tag Plastic Cord Wire Strap Zip Label Ties
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Nylon Self Locking Label Tag Ties Network Cable Marker Cord Wire Strap Zip Loop
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3x100mm Nylon Cable Ties with Marking Tag Plastic Cord Wire Strap Zip Label Ties
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Nylon Self Locking Label Tag Ties Network Cable Marker Cord Wire Strap Zip Loop
Nylon Self Locking Label Tag Ties Network Cable Marker Cord Wire Strap Zip Loop
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Nylon Self Locking Label Tag Ties Network Cable Marker Cord Wire Strap Zip Loop
Nylon Self Locking Label Tag Ties Network Cable Marker Cord Wire Strap Zip Loop
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3x100mm Nylon Cable Ties with Marking Tag Plastic Cord Wire Strap Zip Label Ties
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Nylon Self Locking Label Tag Ties Network Cable Marker Cord Wire Strap Zip Loop
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500pc 200mm Self Locking Network Nylon Cable Ties Wire Zip Cord Strap Ties
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