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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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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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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100PCS White Nylon Network Wire Cord Zip Fastener Cable Tie 72mmx500mm
100PCS White Nylon Network Wire Cord Zip Fastener Cable Tie 72mmx500mm
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46mm Width Stainless PVC Covered Self Locking Cord Pipe Ties Hoops 100 Pcs
46mm Width Stainless PVC Covered Self Locking Cord Pipe Ties Hoops 100 Pcs
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Computer TV Wire Cord Wrap Fixed Cable Zip Ties White 22x100mm 100pcs
Computer TV Wire Cord Wrap Fixed Cable Zip Ties White 22x100mm 100pcs
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100Pcs Black Nylon Network Cord Cable Zip Wire Tie Fastener 10
100Pcs Black Nylon Network Cord Cable Zip Wire Tie Fastener 10
$13.09
Computer Network Wire Cord Wrap Cable Fixed Zip Ties Black 72x200mm 100pcs
Computer Network Wire Cord Wrap Cable Fixed Zip Ties Black 72x200mm 100pcs
$11.04
100Pcs 44mm x 300mm White Network Cable Cord Wire Tie Fastener
100Pcs 44mm x 300mm White Network Cable Cord Wire Tie Fastener
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25mmx150mm Self Lock Network Wire Cord Zip Cable Fixed Ties White 100pcs
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100pcs Toothed Grip Nylon Cable Wire Cord Zip Ties Straps 36x350mm White
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100Pcs Black Nylon Network Cord Cable Zip Wire Tie Fastener 16
100Pcs Black Nylon Network Cord Cable Zip Wire Tie Fastener 16
$17.57
500pcs 8 inch White Network Cable Cord Wire Strap Zip Tie Nylon 27200mm New
500pcs 8 inch White Network Cable Cord Wire Strap Zip Tie Nylon 27200mm New
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Packing String Network Wire Cord Cable Zip Ties Fasten 36x100mm 100 Pcs
Packing String Network Wire Cord Cable Zip Ties Fasten 36x100mm 100 Pcs
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100 Pcs 22mm x 80mm White Network Cable Cord Wire Tie Strap
100 Pcs 22mm x 80mm White Network Cable Cord Wire Tie Strap
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20 Dupont Nylon CABLE TIES w Mounting Hole 8 inch x 3 16 Zip Locking cord tie
20 Dupont Nylon CABLE TIES w Mounting Hole 8 inch x 3 16 Zip Locking cord tie
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New 100Pcs Pack 12 inch Network Cable Cord Wire Tie Strap Zip Nylon
New 100Pcs Pack 12 inch Network Cable Cord Wire Tie Strap Zip Nylon
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Cable Cord Wire ZIP Ties Straps 8 inch 40LBS Nylon 1000 PSC Wholesale Lot Black
Cable Cord Wire ZIP Ties Straps 8 inch 40LBS Nylon 1000 PSC Wholesale Lot Black
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THE PERFECT BUNGEE FE18 6BK Tie DownCargo Net18 In LBlack6 Cords
THE PERFECT BUNGEE FE18 6BK Tie DownCargo Net18 In LBlack6 Cords
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12 PC SET 36 3 FT HEAVY DUTY BUNGEE CORD ORANGE TIP TIE DOWN STRAP
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500pcs 8 inch White Network Cable Cord Wire Strap Zip Tie Nylon 27200mm
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500X NEW 6 inch colorized Network Cable Cord Wire Strap Zip Tie Nylon 25150mm
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250pc Pack NEW White Network Cable Cord Wire Strap Zip Tie Nylon 5450mm durable
250pc Pack NEW White Network Cable Cord Wire Strap Zip Tie Nylon 5450mm durable
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250X Pack NEW White Network Cable Cord Wire Strap Zip Tie Nylon 5400mm durable
250X Pack NEW White Network Cable Cord Wire Strap Zip Tie Nylon 5400mm durable
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100pcs NEW 4 inch colorized Network Cable Cord Wire Strap Zip Tie Nylon 2100mm
100pcs NEW 4 inch colorized Network Cable Cord Wire Strap Zip Tie Nylon 2100mm
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100x Nylon Cable Zip Tie 4 inch colorized Wire Cord Electrical 25100MM HOT new
100x Nylon Cable Zip Tie 4 inch colorized Wire Cord Electrical 25100MM HOT new
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250pc Pack White Network Cable Cord Wire Strap Zip Tie Nylon 52400mm durable
250pc Pack White Network Cable Cord Wire Strap Zip Tie Nylon 52400mm durable
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500pcs 6 inch White Network Cable Cord Wire Strap Zip Tie Nylon 27150mm
500pcs 6 inch White Network Cable Cord Wire Strap Zip Tie Nylon 27150mm
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100pcs NEW 8 inch colorized Network Cable Cord Wire Strap Zip Tie Nylon 36200
100pcs NEW 8 inch colorized Network Cable Cord Wire Strap Zip Tie Nylon 36200
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250pcs Pack 10 inch White Network Cable Cord Wire Strap Zip Tie Nylon 35250mm
250pcs Pack 10 inch White Network Cable Cord Wire Strap Zip Tie Nylon 35250mm
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6PC 24 2 FT 9MM BUNGEE CORD TIE DOWN STRAP 6 PC SET TIE DOWN
6PC 24 2 FT 9MM BUNGEE CORD TIE DOWN STRAP 6 PC SET TIE DOWN
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6 PC SET 72 6 FT HEAVY DUTY BUNGEE CORD ORANGE HOOK TIE DOWN STRAP STRAP
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LOT OF 50 6 BLACK BALL BUNGEE CORD TIE DOWN STRAP CANOPY ACCESSORY
LOT OF 50 6 BLACK BALL BUNGEE CORD TIE DOWN STRAP CANOPY ACCESSORY
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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
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
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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9 Ball Bungee Cord Stretches to 16  TIE DOWNS 25 pcs NEW
9 Ball Bungee Cord Stretches to 16 TIE DOWNS 25 pcs NEW
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