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Author Question: A 20.0-N weight slides down a rough inclined plane which makes an angle of 30.0 with the horizontal. ... (Read 245 times)

debasdf

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on: Jul 29, 2018
A 20.0-N weight slides down a rough inclined plane which makes an angle of 30.0 with the horizontal. The weight starts from rest and gains a speed of 15.0 m/s after sliding 150 m. How much work is done against friction? Use g = 10 m/s2.
 
  A) 1270 J
  B) 1500 J
  C) -1500 J
  D) 229 J
  E) -229 J

Question 2

What is 34 + ( 3 )  (1.2465 ) written with the correct number of significant figures?
 
  A) 37.7
  B) 37.74
  C) 4  101
  D) 38
  E) 37.7395


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lindahyatt42

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

A

Answer to Question 2

D


debasdf

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Reply #2 on: Jul 29, 2018
TY


lindahyatt42

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


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