Procopio is driving a car (m = 1000 kg) at v1 = 11.11 m/s when he stepped on the brakes. The car traveled a distance of s = 15 m before stopping completely. How much force F was needed to stop the car? The work done by the force F as the car traveled a distance s before stopping is: W = By the work-energy theorem: 2 W = - K1 = -½ Combining these two equations for work and isolating F, we obtain an expression for F: F = Plugging in values, we know that 4.4 newtons of force is needed to stop the car.
Procopio is driving a car (m = 1000 kg) at v1 = 11.11 m/s when he stepped on the brakes. The car traveled a distance of s = 15 m before stopping completely. How much force F was needed to stop the car? The work done by the force F as the car traveled a distance s before stopping is: W = By the work-energy theorem: 2 W = - K1 = -½ Combining these two equations for work and isolating F, we obtain an expression for F: F = Plugging in values, we know that 4.4 newtons of force is needed to stop the car.
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter6: Energy Of A System
Section: Chapter Questions
Problem 3OQ
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