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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BLACK 100 PCS Pack 7 inch Network Cable Wire Tie Strap Cord 50 Lb Zip Nylon USA
BLACK 100 PCS Pack 7 inch Network Cable Wire Tie Strap Cord 50 Lb Zip Nylon USA
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500pcs 8 network cable ties cord zip wire tie strap 40 Lbs nylon choose color
500pcs 8 network cable ties cord zip wire tie strap 40 Lbs nylon choose color
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NEW 100pcs WHITE 8 35x200mm Locking Nylon Plastic Cable Wire Zip Tie Cord Wrap
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100 PCS Pack 8 inch WHITE Network Cable Cord Wire Tie Strap 40 Lbs Zip Nylon
100 PCS Pack 8 inch WHITE Network Cable Cord Wire Tie Strap 40 Lbs Zip Nylon
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WHITE 100pc 8 inch Cord Wire Network Cable Zip Nylon Tie Strap Wrap 40LB Tensile
WHITE 100pc 8 inch Cord Wire Network Cable Zip Nylon Tie Strap Wrap 40LB Tensile
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100 PACK HEAVY DUTY Nylon Cable Zip Ties 11 inch 50 LBS WHITE Wire Cord Electric
100 PACK HEAVY DUTY Nylon Cable Zip Ties 11 inch 50 LBS WHITE Wire Cord Electric
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100 PACK HEAVY DUTY Nylon Cable Zip Ties 11 inch 50 LBS BLACK Wire Cord Electric
100 PACK HEAVY DUTY Nylon Cable Zip Ties 11 inch 50 LBS BLACK Wire Cord Electric
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Bungee Cords Coated Hooks Heavy Set Pack Straps Strap Tie Down Automotive 20 Pc
Bungee Cords Coated Hooks Heavy Set Pack Straps Strap Tie Down Automotive 20 Pc
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25 PCS Panduit 5 1 2 inch Orange Nylon Network Cable Clamp Cord Wire Zip Tie
25 PCS Panduit 5 1 2 inch Orange Nylon Network Cable Clamp Cord Wire Zip Tie
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USA FREE SHIP 100 BLACK Plastic Cable Cord Wire Zip Ties 118 12 BRAND NEW
USA FREE SHIP 100 BLACK Plastic Cable Cord Wire Zip Ties 118 12 BRAND NEW
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100 PK Nylon Cable Zip Tie BLACK 12 inch 40LBS Wire Cord Electrical FAST FREE
100 PK Nylon Cable Zip Tie BLACK 12 inch 40LBS Wire Cord Electrical FAST FREE
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100 PCS Pack 12 inch Network Cable Cord Wire BLACK Tie Strap 40 Lbs Zip Nylon
100 PCS Pack 12 inch Network Cable Cord Wire BLACK Tie Strap 40 Lbs Zip Nylon
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100 PCS Pack BLACK 12 inch Network Nylon Cable Cord Wire Tie Strap 40 Lbs Zip
100 PCS Pack BLACK 12 inch Network Nylon Cable Cord Wire Tie Strap 40 Lbs Zip
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20pcs 300mm White Nylon Ties Cable Cord Wire Strap Self Locking Tie Multi Use
20pcs 300mm White Nylon Ties Cable Cord Wire Strap Self Locking Tie Multi Use
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1000 PCS 8 Pack Black Network Cable Cord Wire Tie Strap 50 Lbs Zip Nylon
1000 PCS 8 Pack Black Network Cable Cord Wire Tie Strap 50 Lbs Zip Nylon
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20pcs 6inch Nylon Self Locking Network Cable Cord Wire Zip Ties Strap Red
20pcs 6inch Nylon Self Locking Network Cable Cord Wire Zip Ties Strap Red
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60 Nylon CABLE ZiP TIES White 78 inch 20cm x 1 8 40 lb Test cord Thin Wraps
60 Nylon CABLE ZiP TIES White 78 inch 20cm x 1 8 40 lb Test cord Thin Wraps
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Nylon Plastic Lock Ties Straps Cable Wire Wraps Cord Self Locking Black 100mm
Nylon Plastic Lock Ties Straps Cable Wire Wraps Cord Self Locking Black 100mm
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100 pcs 1 pack 4 inch White Nylon Cable Wire Zip Ties Cord 100mm x 3 mm
100 pcs 1 pack 4 inch White Nylon Cable Wire Zip Ties Cord 100mm x 3 mm
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12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
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12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 long
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 long
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200 PCS 4 inch Network Cable Cord Wire Tie Strap 18 Lbs Zip Nylon Black + White
200 PCS 4 inch Network Cable Cord Wire Tie Strap 18 Lbs Zip Nylon Black + White
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200 PCS 4 inch Network Cable Cord Wire Tie Strap 15 Lbs Zip Nylon Five Color
200 PCS 4 inch Network Cable Cord Wire Tie Strap 15 Lbs Zip Nylon Five Color
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100Pcs Nylon Black Tighten Cable Wire Holder Wrap Self Locking Zip Ties Cord New
100Pcs Nylon Black Tighten Cable Wire Holder Wrap Self Locking Zip Ties Cord New
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LOT OF 100 8 BLACK BALL BUNGEE CORD TIE DOWN STRAP CANOPY ACCESSORY
LOT OF 100 8 BLACK BALL BUNGEE CORD TIE DOWN STRAP CANOPY ACCESSORY
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100 PCS Pack 8 inch White Network Cable Cord Wire Tie Strap 50 Lbs Zip Nylon
100 PCS Pack 8 inch White Network Cable Cord Wire Tie Strap 50 Lbs Zip Nylon
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100PCS 4681012inch Network Cable Cord Wire Tie Strap Zip Nylon Self Locking
100PCS 4681012inch Network Cable Cord Wire Tie Strap Zip Nylon Self Locking
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100 PACK HEAVY DUTY Nylon Cable Zip Tie 11 inch 65LBS White Wire Cord Electrical
100 PACK HEAVY DUTY Nylon Cable Zip Tie 11 inch 65LBS White Wire Cord Electrical
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250X Pack durable Network Cable Cord Wire Strap Zip Tie Nylon 51250mm Superbat
250X Pack durable Network Cable Cord Wire Strap Zip Tie Nylon 51250mm Superbat
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CAL HAWK 32 HEAVY DUTY ELASTIC TIE DOWN BUNGEE CORDS 10 PIECES ATD32A
CAL HAWK 32 HEAVY DUTY ELASTIC TIE DOWN BUNGEE CORDS 10 PIECES ATD32A
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4 MIni Cable Zip Cord Wire Tie Strap 100pc Black UV Nylon 18Lb Self Lock Loop
4 MIni Cable Zip Cord Wire Tie Strap 100pc Black UV Nylon 18Lb Self Lock Loop
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NEW 12 Heavy Duty Bungee Cord Tie Down Cords 32 Long
NEW 12 Heavy Duty Bungee Cord Tie Down Cords 32 Long
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NEW 24Pk Heavy Duty Bungee Cord Tie Down Cords 32 Long
NEW 24Pk Heavy Duty Bungee Cord Tie Down Cords 32 Long
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25 PCS Panduit 5 1 2 inch Orange Nylon Network Cable Clamp Cord Wire Zip Tie
25 PCS Panduit 5 1 2 inch Orange Nylon Network Cable Clamp Cord Wire Zip Tie
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100pcs Lot 31200mm Label tie Network Cable Cord Wire Strap Zip Nylon New
100pcs Lot 31200mm Label tie Network Cable Cord Wire Strap Zip Nylon New
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1000 PCS Pack 12 Inch 12 Black Network Cable Cord Wire Tie Ties Strap 60 Lbs
1000 PCS Pack 12 Inch 12 Black Network Cable Cord Wire Tie Ties Strap 60 Lbs
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100 Pcs 44mm x 200mm White Network Cable Cord Wire Tie Strap
100 Pcs 44mm x 200mm White Network Cable Cord Wire Tie Strap
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100 Pcs 28mm x 200mm White Network Cable Cord Wire Tie Strap
100 Pcs 28mm x 200mm White Network Cable Cord Wire Tie Strap
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Packing String Network Electric Wire Cord Cable Zip Ties 36x200mm 100pcs
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