Item EG001006: For two balls that have the same mass, the ball that is rolling faster has more motion energy.

Two identical balls are rolling down a hill. Ball 2 is rolling faster than Ball 1.

Which ball has more motion energy (kinetic energy)?

  1. Ball 1 has more motion energy.
  2. Ball 2 has more motion energy.
  3. Both balls have the same amount of motion energy.
  4. More information is needed to determine which ball has more motion energy.

Distribution of Responses

Chart showing distrubtion of responses for Item EG001006

Percent of students responding correctly

Grades 6–862%
Grades 9–1261%
Primary Language is English63%
Primary Language is not English47%

View data table