Log In | Register

Item NG099001: When skateboarding down a hill, gravitational potential energy is transformed into motion energy and thermal energy.

A girl is riding her skateboard down a hill.  She speeds up as she goes down the hill, and the wheels get a little warmer.

What energy transformations happen while she is going down the hill?

  1. Motion energy (kinetic energy) is transformed into gravitational potential energy and thermal energy.
  2. Gravitational potential energy is transformed into motion energy (kinetic energy) and thermal energy.
  3. Gravitational potential energy is transformed only into motion energy (kinetic energy).
  4. No energy transformations are involved while she is going down the hill.
Distribution of Responses
Chart showing distrubtion of responses for Item NG099001
Students Responding Correctly
Group Correct Total Percent
Overall 1370 2995 46%
Grades
  6–8 792 1903 42%
  9–12 572 1080 53%
Gender
  Male680145947%
  Female667148345%
Primary Language
  English1253270646%
  Other8021338%

View data table