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Author Question: An 8.0-kg block is released from rest, with v1 = 0.00 m/s, on a rough incline, as shown in the ... (Read 321 times)

bclement10

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on: Jul 29, 2018
An 8.0-kg block is released from rest, with v1 = 0.00 m/s, on a rough incline, as shown in the figure.
 
  The block moves a distance of 1.6-m down the incline, in a time interval of 0.80 s, and acquires a velocity of v2 = 4.0 m/s. How much work does gravity do on the block during this process?
 
  A) +81 J
  B) +100 J
  C) +120 J
  D) -81 J
  E) -100 J

Question 2

The plot in the figure shows the potential energy of a particle, due to the force exerted on it by another particle, as a function of distance. At which of the three points labeled in the figure is the magnitude of the force on the particle greatest?
 
  A) point X
  B) point Y
  C) point Z


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strudel15

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

Answer: A

Answer to Question 2

Answer: A


bclement10

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Reply 2 on: Jul 29, 2018
Gracias!

laurnthompson

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Reply 3 on: Yesterday
Excellent

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