Bungee Jumping Energy Conversions

DIRECTIONS: In the sim, check the box next to "Force diagram" and from the dropdown above your jumper select "world and energy bar" to make your sim look like the image.

QUESTION: Before you hit the play button, 100% of your jumper's energy is in what form?

• Kinetic Energy

• Gravitational Potential Energy

• Elastic Potential Energy

• Thermal Energy

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DIRECTIONS: Click the play button and watch your jumper go. Carefully study the graph and then answer the following question:

QUESTION: Which forms of energy are shown in the graph? Select all that apply.

• Gravitational Potential Energy (GPE)

• Elastic Potential Energy (EPE)

• Thermal Energy (TE)

• Chemical Energy (CE)

• Kinetic Energy (KE)

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QUESTION: As your jumper bounces up and down, why does the gravitational potential energy (GPE) never reach zero?

• Because of the GPE stored in the tower.

• Because of the GPE stored in the cord.

• Because the jumper never fully reaches the ground.

• Because gravity it everywhere.

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QUESTION: Starting with the beginning of the jump, place the forms of energy listed below in the correct order of conversions (change). Kinetic Energy is in the chain of conversions twice, so pay attention to how it is labeled below to place it in the right order.

• Gravitational Potential Energy (GPE)

• 1st Kinetic Energy (KE)

• Elastic Potential Energy (EPE)

• 2nd Kinetic Energy (KE)

• Back to Gravitational Potential Energy (GPE)

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DIRECTIONS: Reset the sim and restore the settings you had for question 1. Locate the slider for mass (green), slide it back and forth, and observe in the graph how it affects energy.

QUESTION: What does increasing the jumper's mass do to the system?

Increasing mass​ (a)   ​ (b)   energy.

• increases
• gravitational potential
• decreases
• has no effect on
• kinetic
• elastic potential

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DIRECTIONS: Locate the slider for the height of the platform (orange). Play with it and observe what effect it has on the jumper's energy.

QUESTION: What does increasing the platform's height do to the system?

Increasing height​​ (a)   ​ (b)   energy.

• increases
• gravitational potential
• decreases
• elastic potential
• has no effect on
• kinetic

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QUESTION: What does the pink slider adjust?

• Jumper's mass

• Height of the platform

• Length of the cord

• Spring constant (k)

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READ: The final slider (dark red/brown) adjusts what is known as the spring constant (k). Adjust this value back and forth and observe what it does to your jumper's jump. You will most likely need to reset the sim each time you adjust and test for k.

WRITE: Based on your observations, what is meant by spring constant and how does it apply to the bungee jump sim?

Evaluate responses using AI:

OFF

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DIRECTIONS: Reset the sim and restore the settings you had from question 1, but this time select "world and graph" from the dropdown. Hit play, let the sim run for a minute, and then study the graph, looking for patterns and anything else that stands out to you.

QUESTION: Was there a definite pattern to your graph?

• Yes, and it remained constant.

• Yes, but it changed over time.

• No, it was random.

• No, it didn't create a graph.

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DIRECTIONS: Click on the location in the graph that represents one of the points where your jumper would have the greatest gravitational potential energy (GPE).

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