Item RG095002: Energy is transferred between two balls as the balls hit each other.
A player rolls Ball A towards Ball B as pictured in Figure 1. Ball A then hits Ball B as shown in Figure 2.
  
Was energy transferred between the two balls as the balls hit each other?
- Yes, Ball A transferred energy to Ball B.
 - Yes, Ball B transferred energy to Ball A.
 - No, the balls don’t have any energy, so energy was not transferred.
 - No, even though the balls have energy, hitting something does not transfer energy.
 
- Distribution of Responses
 
								- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 460
 
- Students Responding Correctly
 
| Group | Correct | Total | Percent | 
|---|---|---|---|
| Overall | 1158 | 1822 | 64% | 
| Grades | |||
| 4–5 | 198 | 322 | 61% | 
| 6–8 | 476 | 809 | 59% | 
| 9–12 | 484 | 691 | 70% | 
| Gender | |||
| Male | 578 | 898 | 64% | 
| Female | 566 | 901 | 63% | 
| Primary Language | |||
| English | 1055 | 1651 | 64% | 
| Other | 79 | 133 | 59% | 

