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Item NG100002: When a ball is falling down, the gravitational potential energy of the ball is transformed into motion energy but the elastic energy of the ball is not.

A ball is falling toward the ground.  The speed of the ball increases as it falls.  While the ball is falling and before it hits the ground, which of the following forms of energy is gravitational potential energy being transformed into?  (Assume that the ball is not stretched or compressed when it is traveling through the air.)

  1. Both kinetic energy (motion energy) and elastic potential energy
  2. Kinetic energy (motion energy) but not elastic potential energy
  3. Elastic potential energy of the ball but not kinetic energy (motion energy)
  4. Neither elastic potential energy nor kinetic energy (motion energy)
Distribution of Responses
Chart showing distrubtion of responses for Item EG100002
Scale Score for Item Difficulty
(200[Easy]-800[Difficult])
484
Students Responding Correctly
Group Correct Total Percent
Overall 511 988 52%
Grades
  4–5N/AN/AN/A
  6–8 329 644 51%
  9–12 182 344 53%
Gender
  Male23545851%
  Female26450352%
Primary Language
  English45486453%
  Other4510145%

View data table