When a molecule collides with another that is approaching with greater momentum, its rebound speed
1) stays the same,
2) increases,
3) decreases,
and when a molecule collides with another that is receding, its rebound speed
4) stays the same.
5) increases.
6) decreases.
Answer: 2, 6
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An electron is released form rest in a region of space where a uniform electric field is present. Joanna claims that its kinetic and potential energies both increase as it moves from its initial position to its final position. Sonya claims that they both decrease. Which one, if either, is correct?
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