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Item EG081001: Two objects that are moving at the same speed must have different masses in order to have different amounts of motion energy.

Two objects are moving at the same speed.  The objects have different amounts of motion energy.  Which of the following must be true?

  1. The objects are different sizes.
  2. The objects have different shapes.
  3. The objects have different masses.
  4. The objects are made of different materials.
Distribution of Responses
Chart showing distrubtion of responses for Item EG081001
Students Responding Correctly
Group Correct Total Percent
Overall 469 834 56%
Grades
  6–8 294 544 54%
  9–12 172 287 60%
Gender
  Male23942357%
  Female22539857%
Primary Language
  English42773958%
  Other347744%

View data table