Gravitational potential energy homework

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Homework Help Overview

The discussion revolves around gravitational potential energy and its relation to a diver falling from a height. The original poster presents a problem involving a diver's potential energy at a height of 10.0 m and seeks assistance in calculating the speed of the diver upon impact with the water.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to calculate gravitational potential energy using the formula Ep = mgh but expresses uncertainty about determining the diver's speed upon hitting the water. Participants suggest using conservation of energy and question the relationship between speed and kinetic energy.

Discussion Status

Participants are exploring the relationship between potential energy and kinetic energy, with some guidance provided on using conservation of energy principles. There is an ongoing exchange of questions and confirmations, but no consensus or resolution has been reached.

Contextual Notes

The original poster's inquiry includes a specific height and mass, but the discussion does not clarify all necessary parameters for the speed calculation, such as air resistance or initial conditions.

rhxoehwhfh
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A 65 kg diver is standing on a diving platform 10.0 m above the water. What is the gravitational potential energy of the diver with respect to the water’s surface?

I know this one,,,
Ep = mgh
e= 65*10* 9.8
= 6370 Joules
or 6.37 kilojoules

If the diver in question 6 falls from the diving platform, what is her speed just as she strikes the water?

but I don't know how to calculate this one...
 
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Use conservation of energy. What's kinetic energy?
 
does speed of the diver have something to do with kinetic energy?
 
rhxoehwhfh said:
does speed of the diver have something to do with kinetic energy?

Yes. Perhaps you should look it up.
 
Yep , you were right
 
Can you work it out now?
 

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