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".

Discover Cord Tie On eBay Below:

10pc Bungee Cord 24 inch Heavy Duty Straps 2 Hooks Tie Down Set
10pc Bungee Cord 24 inch Heavy Duty Straps 2 Hooks Tie Down Set
$6.42
10pc Bungee Cord 30 inch Heavy Duty Straps 2 Hooks Tie Down Set
10pc Bungee Cord 30 inch Heavy Duty Straps 2 Hooks Tie Down Set
$6.62
10pc Bungee Cord 54 inch Heavy Duty Straps 2 Hooks Tie Down Set
10pc Bungee Cord 54 inch Heavy Duty Straps 2 Hooks Tie Down Set
$9.57
15 Bungee Cord Hooks SJ Shock Cord Rubber Rope Hook Hay Cover Tarp Tie Down
15 Bungee Cord Hooks SJ Shock Cord Rubber Rope Hook Hay Cover Tarp Tie Down
$10.49
10 PK Heavy Duty 36 3 Long x 1 2 Dia Thick Bungee Cords Tie Down Cord Strap
10 PK Heavy Duty 36 3 Long x 1 2 Dia Thick Bungee Cords Tie Down Cord Strap
$22.99
Heavy Duty Bungee Cord 1 2 x 72 Tie Down
Heavy Duty Bungee Cord 1 2 x 72 Tie Down
$2.45
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
$0.99
100X 8 3x200MM BLACK NYLON PLASTIC LOCKING CABLE TIES ZIP WIRE WRAP CORDS Black
100X 8 3x200MM BLACK NYLON PLASTIC LOCKING CABLE TIES ZIP WIRE WRAP CORDS Black
$1.39
1000pcs 6cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie
1000pcs 6cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie
$4.79
NEW 800 pcs Quantity 8 Zip Cable Wire Ties Natural Nylon Fastener cord NEW
NEW 800 pcs Quantity 8 Zip Cable Wire Ties Natural Nylon Fastener cord NEW
$14.99
6 Piece 31 rubber tie Downs straps bungee cord tarp Champ 7 255
6 Piece 31 rubber tie Downs straps bungee cord tarp Champ 7 255
$3.99
30 White NYLON CABLE TIES 11 inch long x 1 8 cord wire ZIP TIE 40 lb pound
30 White NYLON CABLE TIES 11 inch long x 1 8 cord wire ZIP TIE 40 lb pound
$6.25
6 Pc Bungee Cords Stretch Elastic Tarp Tie Down Straps Tents Moving 18 24 30
6 Pc Bungee Cords Stretch Elastic Tarp Tie Down Straps Tents Moving 18 24 30
$8.88
6 Pc Bungee Cords Stretch Elastic Tarp Tie Down Straps Luggage Tents 18 24 30
6 Pc Bungee Cords Stretch Elastic Tarp Tie Down Straps Luggage Tents 18 24 30
$8.88
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 36 long
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 36 long
$8.99
100PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip Cord Wrap Self Lock
100PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip Cord Wrap Self Lock
$4.99
100PCS 8 2X195MM BLACK NYLON PLASTIC LOCKING CABLE TIES ZIP WIRE WRAP CORDS
100PCS 8 2X195MM BLACK NYLON PLASTIC LOCKING CABLE TIES ZIP WIRE WRAP CORDS
$1.78
Boxer Tools MM64 Assorted Tie Down Cords 18 Pk Quantity 1
Boxer Tools MM64 Assorted Tie Down Cords 18 Pk Quantity 1
$16.86
1000 PCs 012 x 236 White Network Cable Cord Wire Strap Zip Tie Nylon
1000 PCs 012 x 236 White Network Cable Cord Wire Strap Zip Tie Nylon
$11.99
1000 PCs 012 x 393 White Network Cable Cord Wire Strap Zip Tie Nylon
1000 PCs 012 x 393 White Network Cable Cord Wire Strap Zip Tie Nylon
$14.99
1000 PCs 012 x 315 White Network Cable Cord Wire Strap Zip Tie Nylon
1000 PCs 012 x 315 White Network Cable Cord Wire Strap Zip Tie Nylon
$12.99
New Adhesive Cable Cord Wire Organizer Plastic Clip Tie Fixer Fastener Holder
New Adhesive Cable Cord Wire Organizer Plastic Clip Tie Fixer Fastener Holder
$0.99
1000 PCS Pack 4 inch Network Cable Cord Wire Tie Strap Zip Nylon
1000 PCS Pack 4 inch Network Cable Cord Wire Tie Strap Zip Nylon
$10.00
New 200 Pieces Black 12 Inch Nylon Cable Straps Zip Ties Wire Networking Cord
New 200 Pieces Black 12 Inch Nylon Cable Straps Zip Ties Wire Networking Cord
$11.95
10pc 10 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
10pc 10 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
$10.75
10pc 15 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
10pc 15 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
$12.75
10pc 21 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
10pc 21 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
$13.75
10pc 31 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
10pc 31 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
$13.75
10pc 41 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
10pc 41 Round End EPDM Rubber Tie Down Hook Strap Cord Bungee
$14.75
Heavy Duty Bungee Cord 1 2 x 64 Tie Down
Heavy Duty Bungee Cord 1 2 x 64 Tie Down
$2.39
Heavy Duty Bungee Cord 1 2 x 54 Tie Down
Heavy Duty Bungee Cord 1 2 x 54 Tie Down
$1.99
100Pcs Nylon Self Locking Label Tie Network Cable Marker Cord Wire Strap Zip qh
100Pcs Nylon Self Locking Label Tie Network Cable Marker Cord Wire Strap Zip qh
$4.25
100 Pcs Black 5x300mm Network Nylon Plastic Cable Wire Zip Tie Cord Strap Useful
100 Pcs Black 5x300mm Network Nylon Plastic Cable Wire Zip Tie Cord Strap Useful
$5.43
10PC 32 Heavy Duty Bungee Cords 32 inch Thick Tie Downs w Hooks CAL HAWK BRAND
10PC 32 Heavy Duty Bungee Cords 32 inch Thick Tie Downs w Hooks CAL HAWK BRAND
$26.99
24 HEAVY DUTY Red HOOK BUNGEE CORD TIE DOWN STRAP 12 PC SET
24 HEAVY DUTY Red HOOK BUNGEE CORD TIE DOWN STRAP 12 PC SET
$12.59
12 PC SET 36 HEAVY DUTY BUNGEE CORD ORANGE TIP TIE DOWN STRAP
12 PC SET 36 HEAVY DUTY BUNGEE CORD ORANGE TIP TIE DOWN STRAP
$15.89
10pcs Cable Cord Wire Line Organizer Plastic Clips Ties Fixer Fastener Holder
10pcs Cable Cord Wire Line Organizer Plastic Clips Ties Fixer Fastener Holder
$1.70
Cable Cord Wire Line Organizer Plastic Clips Ties Fixer Fastener Holder 10pcs
Cable Cord Wire Line Organizer Plastic Clips Ties Fixer Fastener Holder 10pcs
$1.69
1000 Pack household Network Cable Cord Wire Tie Strap 18 Lbs Nylon 100mm18mm
1000 Pack household Network Cable Cord Wire Tie Strap 18 Lbs Nylon 100mm18mm
$6.72

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