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Ch.5 - Thermochemistry
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All textbooksBrown 14th EditionCh.5 - ThermochemistryProblem 119a

Chapter 5, Problem 119a

Suppose an Olympic diver who weighs 52.0 kg executes a straight dive from a 10-m platform. At the apex of the dive, the diver is 10.8 m above the surface of the water. (a) What is the potential energy of the diver at the apex of the dive, relative to the surface of the water?

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Hi everyone here we have a question asking us to determine the potential energy of a kg swimmer at the apex of his dive from an 8.0 m platform. If the apex of the dive is 8.6 m relative to the surface of the water. So we're going to use the formula. Potential energy equals mass times the acceleration due to gravity times our distance. So our potential energy Will equal 48 kilograms Times 9.8 meters per second squared Times 8.6 meters, And that equals 45 0. kilograms times meter squared times inverse seconds. And that is equal to 0.44 jules. And if we want to put that into scientific notation, We will move the decimal .1, 2, 3 places to the lift. So that would give us 4.0 times 10 To the 3rd jewels. And that is our final answer. Thank you for watching. Bye.
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Suppose an Olympic diver who weighs 52.0 kg executes a straight dive from a 10-m platform. At the apex of the dive, the diver is 10.8 m above the surface of the water. (b) Assuming that all the potential energy of the diver is converted into kinetic energy at the surface of the water, at what speed, in m>s, will the diver enter the water?

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