A railroad diesel engine weighs four times as much as a freight car. If the diesel engine coasts at 4.0 km/h into a freight car that is intitally at rest, find the speed of the coupled cars. Express you answer to two significant figures and include appropriate units.

A railroad diesel engine weighs four times as much as a freight car. If the diesel engine coasts at 4.0 km/h into a freight car that is intitally at rest, find the speed of the coupled cars. Express you answer to two significant figures and include appropriate units.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 67P: A person in good physical condition can put out 100 W of useful power for several hours at a...

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Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.

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A railroad diesel engine weighs four times as much as a freight car.

If the diesel engine coasts at 4.0 km/h into a freight car that is intitally at rest, find the speed of the coupled cars. Express you answer to two significant figures and include appropriate units.

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