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FMA-2018B-09 · 2018B F = ma (AAPT)

2018 F = ma Exam B — Question 9

A 3.0 kg ball moving at 10 m/s east collides elastically with a 2.0 kg ball moving 15 m/s west. Which of the following statements could be true after the collision?
Source: Question 9, 2018 F = ma Exam B, © 2018 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.