A box is pulled along a rough horizontal surface by a horizontal force of 80 N. The frictional force between the box and the surface is 60 N. Which of the following is the possible increase of internal energy (AU) and increase of kinetic energy (AK) at the end of the process? A. AU = 200 J, AK = 600 J B. AU = 600 J, AK = 200 J C. AU = 600 J, AK = 800 J D. AU = 200 J, AK = 800 J

College Physics
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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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A box is pulled along a rough horizontal
surface by a horizontal force of 80 N. The
frictional force between the box and the
surface is 60 N. Which of the following is the
possible increase of internal energy (AU) and
increase of kinetic energy (AK) at the end of
the process?
A.
AU = 200 J, AK = 600 J
B.
AU = 600 J, AK = 200 J
C.
AU = 600 J, AK = 800 J
D.
AU = 200 J, AK = 800 J
Transcribed Image Text:A box is pulled along a rough horizontal surface by a horizontal force of 80 N. The frictional force between the box and the surface is 60 N. Which of the following is the possible increase of internal energy (AU) and increase of kinetic energy (AK) at the end of the process? A. AU = 200 J, AK = 600 J B. AU = 600 J, AK = 200 J C. AU = 600 J, AK = 800 J D. AU = 200 J, AK = 800 J
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