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Physics / Physics for Scientists and Engineers, 6 / Chapter 7 / Problem 62

Physics for Scientists and Engineers, | 6th Edition | ISBN: 9781429201247 | Authors: Paul A. Tipler, Gene Mosca

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A 2000-kg car moving at an initial speed of along a

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QUESTION:

A 2000-kg car moving at an initial speed of along a horizontal road skids to a stop in (a) Find the energy dissipated by friction. (b) Find the coefficient of kinetic friction between the tires and the road. (Note: When stopping without skidding and using conventional brakes, 100 percent of the kinetic energy is dissipated by friction within the brakes. With regenerative braking, such as that used in hybrid vehicles, only 70 percent of the kinetic energy is dissipated.)

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QUESTION:

A 2000-kg car moving at an initial speed of along a horizontal road skids to a stop in (a) Find the energy dissipated by friction. (b) Find the coefficient of kinetic friction between the tires and the road. (Note: When stopping without skidding and using conventional brakes, 100 percent of the kinetic energy is dissipated by friction within the brakes. With regenerative braking, such as that used in hybrid vehicles, only 70 percent of the kinetic energy is dissipated.)

ANSWER:

Step 1 of 3

The given data is,

The mass of the car is, .

The initial speed is, .

The final speed is, .

The distance is, .

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