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:

6 Pack Multicolored 12 18 24 Tie Down Bungee Stretch Cords with Hook Ends
6 Pack Multicolored 12 18 24 Tie Down Bungee Stretch Cords with Hook Ends
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New 5 Yard Roll Hook and Loop Velcro Style Cable Wire Cord Strap Tie 4Ft black
New 5 Yard Roll Hook and Loop Velcro Style Cable Wire Cord Strap Tie 4Ft black
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10x 4Ft Reusable Strap Wire Computer Cable Cord Ties Organizer Management Tie
10x 4Ft Reusable Strap Wire Computer Cable Cord Ties Organizer Management Tie
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12 24 HEAVY DUTY BLACK HOOK BUNGEE CORD TIE DOWN STRAP 12 PC SET
12 24 HEAVY DUTY BLACK HOOK BUNGEE CORD TIE DOWN STRAP 12 PC SET
$14.99
Rolson 1800Mm Flat Bungee 20 X 5Mm Travel Cord Holder Tie Elastic Secure 44147
Rolson 1800Mm Flat Bungee 20 X 5Mm Travel Cord Holder Tie Elastic Secure 44147
$14.89
6 PC 48 9 MM BUNGEE CORD TIE DOWN STRAP 6 PC SET
6 PC 48 9 MM BUNGEE CORD TIE DOWN STRAP 6 PC SET
$10.75
Blue Colored Nylon Zip Ties Wraps Strips Organizer For Cable Cord Wire 100Pcs
Blue Colored Nylon Zip Ties Wraps Strips Organizer For Cable Cord Wire 100Pcs
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500 Pack PCS 8 inch Network Cable Cord Wire BLACK Tie Strap 40 Lbs Zip Nylon
500 Pack PCS 8 inch Network Cable Cord Wire BLACK Tie Strap 40 Lbs Zip Nylon
$12.74
CHUMS 1211504LS Eyewear Retainer Cord Tie Dye Mix PK25
CHUMS 1211504LS Eyewear Retainer Cord Tie Dye Mix PK25
$72.62
50 Self locking Green Colored Nylon Wire Cord Cable Zip Ties Straps Organizers
50 Self locking Green Colored Nylon Wire Cord Cable Zip Ties Straps Organizers
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Heavy Duty Bungee Cord 1 2 x 42 Tie Down
Heavy Duty Bungee Cord 1 2 x 42 Tie Down
$1.79
Heavy Duty Bungee Cord 1 2 x 48 Tie Down
Heavy Duty Bungee Cord 1 2 x 48 Tie Down
$1.85
10PC 64 Heavy Duty Bungee Cords 64 inch Thick Tie Downs w Hooks CAL HAWK BRAND
10PC 64 Heavy Duty Bungee Cords 64 inch Thick Tie Downs w Hooks CAL HAWK BRAND
$49.99
10PC 24 Heavy Duty Bungee Cords 24 inch Thick Tie Downs w Hooks CAL HAWK BRAND
10PC 24 Heavy Duty Bungee Cords 24 inch Thick Tie Downs w Hooks CAL HAWK BRAND
$22.99
50 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Zip Ties Straps
50 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Zip Ties Straps
$2.58
100 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Straps Zip Ties
100 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Straps Zip Ties
$4.01
200x Heavy Duty Weather Resistant Nylon Blue Zip Ties Wraps For Wire Cable Cord
200x Heavy Duty Weather Resistant Nylon Blue Zip Ties Wraps For Wire Cable Cord
$6.71
200x Heavy Duty Weather Resistant Nylon Green Zip Ties Wraps For Wire Cable Cord
200x Heavy Duty Weather Resistant Nylon Green Zip Ties Wraps For Wire Cable Cord
$5.54
200x Heavy Duty Self locking Blue Colored Nylon Wire Cord Cable Zip Ties Straps
200x Heavy Duty Self locking Blue Colored Nylon Wire Cord Cable Zip Ties Straps
$7.57
Nylon Green Colored UV Resistant Cable Cord Wire Organizer Strap Zip Ties 200Pcs
Nylon Green Colored UV Resistant Cable Cord Wire Organizer Strap Zip Ties 200Pcs
$6.17
Highland Rotating Hook Triple Strength Bungee Cord Rope Tie Down 52 48 32 24
Highland Rotating Hook Triple Strength Bungee Cord Rope Tie Down 52 48 32 24
$2.75
24 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
24 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
$31.99
Heavy Duty Bungee Cord 1 2 x 24 Tie Down Strap
Heavy Duty Bungee Cord 1 2 x 24 Tie Down Strap
$1.19
10 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
10 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$32.50
50pcs 8 200x3mm Strong Self Locking Nylon Plastic Wire Cable Zip Ties Cord Wrap
50pcs 8 200x3mm Strong Self Locking Nylon Plastic Wire Cable Zip Ties Cord Wrap
$2.94
50Pcs Blue Colored Nylon Zip Ties Wraps Strips Organizer For Cable Cord Wire
50Pcs Blue Colored Nylon Zip Ties Wraps Strips Organizer For Cable Cord Wire
$2.87
10PC 18 Heavy Duty Bungee Cords 18 inch CAL HAWK BRAND Thick Tie Downs w Hooks
10PC 18 Heavy Duty Bungee Cords 18 inch CAL HAWK BRAND Thick Tie Downs w Hooks
$19.75
10 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
10 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$21.50
MASTERLOCK 24 PACK BUNGEE CORD TIE DOWN ST3023AT
MASTERLOCK 24 PACK BUNGEE CORD TIE DOWN ST3023AT
$20.29
50 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
50 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$75.00
50 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
50 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$48.00
20 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
20 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$45.00
20 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
20 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$38.00
20 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
20 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$48.00
10 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
10 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$35.00
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
$9.99
100 PACK HEAVY DUTY Nylon Cable Zip Tie 11 inch 46LBS Black Wire Cord Electrical
100 PACK HEAVY DUTY Nylon Cable Zip Tie 11 inch 46LBS Black Wire Cord Electrical
$5.59
100PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip Wire BLACK cord Wrap
100PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip Wire BLACK cord Wrap
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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
$0.67


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