Item EG079001: When comparing two runners with different amounts of motion energy, the only way to know which one weighs more is to also know how fast each is running.

Two students are running in a race. Student 1 has more motion energy (kinetic energy) than Student 2. Does Student 1 weigh more than, less than, or the same as Student 2?

  1. Student 1 weighs more than Student 2.
  2. Student 1 weighs less than Student 2.
  3. Student 1 weighs the same as Student 2.
  4. The only way to know which student weighs more is to also know how fast each student is running.

Distribution of Responses

Chart showing distrubtion of responses for Item EG079001

Percent of students responding correctly

Overall29%
Grades 6–826%
Grades 9–1234%
Male31%
Female28%
Primary Language is English30%
Primary Language is not English26%

View data table