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Item NG079003: The motion energy of a book sliding across a table is transformed into thermal energy, not into a force.

A girl pushes a book, and it slides across a table. The book slows down and then stops. As the book moves, the book and the table get a little bit warmer. What happened to the kinetic energy (motion energy) of the book?

  1. It was transformed into both a force and thermal energy.
  2. It was transformed into a force but not into thermal energy.
  3. It was transformed into thermal energy but not into a force.
  4. It was used up and was not transformed into a force or thermal energy.
Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 1771
4–5
n = 349
6–8
n = 839
9–12
n = 583
Male
n = 811
Female
n = 920
English
n = 1615
Other
n = 116
A. 50%56% 49% 48% 49% 51% 50% 47%
B. 12%15% 12% 10% 13% 11% 12% 21%
C. 29%19% 30% 34% 29% 29% 29% 25%
D. 9%10% 9% 8% 8% 9% 9% 8%