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Author Question: A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it ... (Read 146 times)

jessicacav

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on: Jul 29, 2018
A stone initially moving at 8.0 m/s on a level surface comes to rest due to friction after it travels 11 m. What is the coefficient of kinetic friction between the stone and the surface?
 
  A) 0.13
  B) 0.25
  C) 0.30
  D) 0.43
  E) 0.80

Question 2

A certain aircraft has a mass of 300,000 kg. At a certain instant during its landing, its speed is 27.0 m/s. If the braking force is a constant 445,000 N, what is the speed of the airplane 10.0 s later?
 
  A) 10.0 m/s
  B) 12.2 m/s
  C) 14.0 m/s
  D) 18.0 m/s
  E) 20.0 m/s
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katkat_flores

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

B


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jessicacav

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Reply #2 on: Jul 29, 2018
TY


katkat_flores

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Reply #3 on: Jul 29, 2018
You're welcome


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