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A player rolls Ball A toward Ball B as pictured in Figure 1. Then Ball A hits Ball B. Both balls continue to roll after the collision as shown in Figure 2.

How fast is Ball A moving before the collision (Figure 1) compared to after the collision (Figure 2)?

  1. Ball A is moving faster before the collision.
  2. Ball A is moving slower before the collision.
  3. Ball A is moving at the same speed before and after the collision.
  4. Additional information is required to answer this question.
Distribution of Responses
Chart showing distrubtion of responses for Item EG096002
Scale Score for Item Difficulty
Students Responding Correctly
Group Correct Total Percent
Overall 718 1372 52%
  6–8 333 669 50%
  9–12 269 452 60%
Primary Language

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