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Author Question: The force on a 3.00-kg object as a function of position is shown in the figure. If an object is ... (Read 158 times)

jace

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on: Jul 29, 2018
The force on a 3.00-kg object as a function of position is shown in the figure.
 
  If an object is moving at 2.50 m/s when it is located at x = 2.00 m, what will its speed be when it reaches x = 8.00 m? (Assume that the numbers on the graph are accurate to 3 significant figures.)
 
  A) 3.25 m/s
  B) 3.70 m/s
  C) 4.10 m/s
  D) 2.90 m/s
  E) 4.50 m/s

Question 2

A 1500-kg car accelerates from 0 to 25 m/s in 7.0 s with negligible friction and air resistance. What is the average power delivered by the engine? (1 hp = 746 W)
 
  A) 50 hp
  B) 60 hp
  C) 70 hp
  D) 80 hp
  E) 90 hp


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kaillie

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

Answer: A

Answer to Question 2

Answer: E


jace

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Reply #2 on: Jul 29, 2018
Thank you!


kaillie

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Reply #3 on: Jul 29, 2018
Always glad to help...


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