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?

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Chapter1: Units, Trigonometry. And Vectors
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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 Fas the car traveled a distance s before stopping is:
W =
By the work-energy theorem:
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.
2.
Transcribed Image Text:The work done by the force Fas the car traveled a distance s before stopping is: W = By the work-energy theorem: 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. 2.
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