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Author Question: A 0.40-kg particle moves under the influence of a single conservative force. At point A where the ... (Read 122 times)

kaid0807

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on: Jul 28, 2018
A 0.40-kg particle moves under the influence of a single conservative force. At point A where the particle has a speed of 10 m/s, the potential energy associated with the conservative force is +40 J. As the particle moves from A to B, the force does +25 J of work on the particle. What is the value of the potential energy at point B?
 a. +65 J
  b. +15 J
  c. +35 J
  d. +45 J
  e. -40 J

Question 2

As a particle moves along the x axis it is acted upon by a single conservative force given by Fx = (20 - 4.0x) N where x is in m. The potential energy associated with this force has the value +30 J at the origin (x = 0). What is the value of the potential energy at x = 4.0 m?
 a. -48 J
  b. +78 J
  c. -18 J
  d. +48 J
  e. +80 J


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miss.ashley

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


kaid0807

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Reply #2 on: Jul 28, 2018
Thanks


miss.ashley

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Reply #3 on: Jul 28, 2018
Welcome :)


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