Please provide explanations and show work 5. An advertisement for my old 2005 Ford Focus claimed that the car could "stop on adime." What net force would be required to stop a 850 kg automobile traveling initiallyat 65 km/h in a distance equal to the diameter of a dime, 1.8 cm?

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Description: Please provide explanations and show work 5. An advertisement for my old 2005 Ford Focus claimed that the car could "stop on adime." What net force would be required to stop a 850 kg automobile traveling initiallyat 65 km/h in a distance equal to the

Answered: 5. An advertisement for my old 2005…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Please provide explanations and show work

5. An advertisement for my old 2005 Ford Focus claimed that the car could "stop on a
dime." What net force would be required to stop a 850 kg automobile traveling initially
at 65 km/h in a distance equal to the diameter of a dime, 1.8 cm?

Expert Solution

Step 1

In the given problem, the car is travelling at an initial speed of 65 km/h

$v = 65 k m / h v = 65 \times \frac{1000}{3600} v = 18.06 m / s$

Thus, the initial kinetic energy of this car is

$K_{i} = \frac{1}{2} m v^{2} K_{i} = \frac{1}{2} \times 850 \times {(18.06)}^{2} K_{i} = 138619.53 J$

As the car comes to a stop, the final kinetic energy of the car will go to zero, thus the change in the kinetic energy of the car as it comes to a stop is

$∆ K = - 138619.53 J$

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