A 1700 kg car coasts on a horizontal road with a speed of 23 m/s. a) How much work must be done by the brakes to decrees speed to a 17 m/s? b) What is the magnitude of the braking force if it takes 2.7 s to the car to decrees speed to a 17 m/s?

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Chapter8: Potential Energy And Conservation Of Energy
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Problem 32P: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of...
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A 1700 kg car coasts on a horizontal road with a speed of 23 m/s.
a) How much work must be done by the brakes to decrees speed to a 17 m/s?
b) What is the magnitude of the braking force if it takes 2.7 s to the car to decrees speed
to a 17 m/s?
Transcribed Image Text:A 1700 kg car coasts on a horizontal road with a speed of 23 m/s. a) How much work must be done by the brakes to decrees speed to a 17 m/s? b) What is the magnitude of the braking force if it takes 2.7 s to the car to decrees speed to a 17 m/s?
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